Koleksi Terkait

• The Reconstruction movement in china / by George E. Taylor
• Melihatkan buku : Meneg Haryono Suyono menerima para pimpinan…
• Melepas: Mendikbud Wardiman Djoyonegoro dan Ketua Bintoro Tjitriwiryo…
• The ilustrated London news
• Dirut Telkomsel Koesmarihatida anggota Direksi Jamuan Makan…
Sekjen Deparpostel Y. Parapak didampingi pimpinan eksekutif…
Cadangan pangan: Padi hibrida varietas the yu 524 ini banyak…
THE SUNDA EMPIRE
WERTHEIM W F INDISCH TIJDSCHRIFT VAN HET RECHT OVERDRUK
CORRCETION SLIPS FOR THE BENGAL CODE
VITAL QUESTIONS OF THE DEVELOPMENT OF THE SOCIALIST WORLD SYSTEM
THE BIRTH OF A NEW CHINA
THE CATHOLIC AND THE WAR
THE PLACE OF INDIA IN THE EMPIRE
Analytical and numerical theory of the motions of the orbital…
A determination of the apex of the solar motion according to…
Ampera Review : transmitter of the message of peoples sufferings…
The economic development of the soviet far east / by E. Raikhman…
Studies on australia's situation on the pacific
Responsibility for peace and war in the pacific / by Henry F.…
The Reconstruction movement in china / by George E. Taylor
The Repercussions of the united states recovery programme upon…
Empire trade and the ottawa agreements
The british view of pacific affairs in 1936 / by Sir Frederick…
The far east 1934 / by G.E. Hubbard
The recent development of japanese foreign trade / by Teijiro…
Agricultural adjustment under the new deal / Mariam S. Farley
The growth of population and occupational changes in japan,…
I.P.R Notes bulletin of the institute of pacific relations :…
I.P.R Notes bulletin of the institute of pacific relations :…
I.P.R Notes bulletin of the institute of pacific relations :…
I.P.R Notes bulletin of the institute of pacific relations :…
I.P.R Notes bulletin of the institute of pacific relations :…
I.P.R Notes bulletin of the institute of pacific relations :…
I.P.R Notes bulletin of the institute of pacific relations :…
Pameran Lukisan Terbaik dari Seluruh Indonesia Dipamerkan Bursa…
Delegasi Vatikan : delegasi Vatikan, Kardinal Rogel Ecthegaray…
Presiden Soekarno menerima Fox Matthew di Istana
Pembukaan … thema Mensukseskan pemilu
India : Presiden Soekarno mengadakan thee party untuk Ny. Yinus…
Memetik Teh: Sejumlah pekerja wanita sedang memetik the dikawasan…
Gereja Kathedral
Berdialog: kepala jurusan MTM STMT Drs. Dirk Koleangan berdialog…
Merayakan HUT : Presiden IWF Gotheriet Sudhol menerima bunga…
Kejuaraan Angkat Besi : Ketua Umum PB PABBSI, Seosilo Sudarman…
Pemilihan The Best Excutive 94 : Gubernur Aceh Syamsudin dan…
Kompetisi gaple di Kathedral Jakarta
Olahraga-pariwisata: Guna menggalakkan olehraga golf sekaligus…
Pemilihan banker of the year 1992 bankir paling simpatik dan…
All the light above it too / Jack Johnson
Torches / Foster The People
The reminder / Feist
The very excellent Mr. Dundee / directed by, Dean Murphy ; produced…
The adventures of sherlock holmes /
The entrepreneur's book : strategi sukses membangun bisnis wirausaha,…
All the bright places = tempat-tempat terang / Jennifer Niven;…
Kentut kosmopolitan : obrolan urban/ Seno Gumira Ajidarma ;…
The new mutants / director, Josh Boone ; producer, Simon Kinberg,…
Pulp Fiction : Music From The Motion Picture
Crypto : fear is the ultimate currency / sutradara, John Stalberg…
Serat Besan Etheng
The Royal Society Tn. 1871 - 1883 Bag 1 - 10 [sumber elektronik]
The Oriental Herald & Journal Of General Literature Th. 1829…
The Oriental Herald & Journal Of General Literature Th. 1828…
The Journal Of The Royal Asiatic Society Th. 1959, Bag 1 - 11…
Mindanao & The Sulu Archipelago Their Natural Resources & Opportunities…
Bibliotheca Indica Vol. 1 Th. 1875 - Bag 1 - 13 [sumber elektronik]
The very best of Kenny G : 38 greatest romantic songs / Kenny…
The Longhorns / J. Frank Dobie
Valentine : the dark avenger / directors, Agus Pestol ; producers,…
Map of the exodus and wilderness journey : the 42 camp sites…
Thor : the dark world / directed by Alan Taylor ; produced by…
The Lion guard : unleash the power / written by Christopher…
The Cheetah girls one world / directed by Paul Hoen ; story…
The Aristocats : special edition / story, Larry Clemmons, Vance…
Max and the cats / Moacyr Scliar ; alih bahasa ke bahasa Inggris,…
Cathetan arsip saking dusun junti (101a NBR 29-L) [bentuk mikro]…
Kunjungan perkenalan Dubes Jerman Mr. Guenther Schoedel kepada…
Kedutaan Besar Jerman : Dubes Jerman Mr.Guenther School el menjamu…
Istana Negara : Penyerahan surat kepercayaan Dubes Jerman yang…
Wisuda siswa The Ghandi Memorial School dihadiri oleh Dirjen…
Resepsi perkenalan Duta Besar Republik Federasi Jerman (RF),…
Bank Mata DKI Jakarta : bekerja sama dengan The Gandhi Memorial…
Serah terima Jabatan Direktur Telekomunikasi Ir.Jahya Sutangger…
Presiden Soeharto menerima kunjungan Menteri Perkonomian Republik…
Dubes federasi Jerman Guenther Schoedel menerima tiga siswa…
Menteri Pertambangan M.Sadli menerima kunjungan Dr.J.G.Todenfer…
Sumbangan untuk kegiatan sosial di Jakarta telah diberikan oleh…
Gurbenur DKI Jaya Tjokropranolo menerima 6 orang Atlit Cacad…
Pertemuan ketua Himpunan PBB Indonesia Mr. Achmad Soebarjo dengan…
Perjanjian antara Depsos RI dengan IIDI (The Institute For International…
Upacara selamatan sehubungan pertambahan armada kapal niaga…
Boekoe Tjerita di negri tjina tempo goan soen the boeat tjoe…
Cathetan arsip saking duusun Junti (Indramayu) ( KBG 143) (Indramayu)…
The Asiatic journal and monthly register for british and foreign…
Gezicht op eene woning te Wari (eiland Biak) Nieuw Guinea (Drawing…
Gezicht op Mokmer (eiland Biak) Nieuw Guinea (Drawing of several…
Portret Mein. Schotanus, Theol. Prof…., Herv. Pred. aldaar,…
Woning te Sorrido (eiland Biak) Nieuw Guinea (Drawing of two…
Biak versiersel op de voorsteven eener praauw (Drawing of a…
Singhadjie van Awawiadie (Eil. Soepiore) Nieuw Guinea (Portrait…
Vrouw van Sorrido eiland Biak (Nieuw Guinea) (Portrait of Papua…
Singhadjie van Sorido (eil. Biak) Nieuw Guinea (Portrait of…
Hoofdkussens in gebruik op Biak (Nieuw Guinea), de bedoeling…
The City of Batavia in the Island of Java and Capital of all…
Korano van Mokmer (eiland Biak) die den moord op 'Holland' gezagvoerder…
Afgodsbeeld uit de Humboldts baai (1/6 waregrootte) (Drawing…
Inwoner van Manoepoe (eiland Koeroedoe) gr. Geelvinkbaai (Portrait…
Inwoner van Manoepoe (eiland Koeroedoe) groote Geelvinkbaai…
Getatoueerde rug ener vrouw van Manoepoe (eiland Koeroedoe)…
Korano (kamponghoofd) op het eiland Moor of Terschelling (groote…
groote Geelvinkbaai. Afgodsbeeld 1/5 ware grootte (Drawing of…
Wariap (groote Geelvinkbaai) (Drawing of a wooden statue from…
groote Geelvink baa. Afgodsbeeld 1/5 ware grootte (Drawing of…
Versierde Papoesche vrouw (eiland Roon) (Portrait of decorated…
Woning op het eiland Roon (Groote Geelvink baai) (Drawing of…
Amulet wat om den hals gedragen wordt (groote Geelvink baai)…
Amulet zooals de inboorlingen ze om der hals dragen (groote…
Eiland Roon, Cataharina, gedoopte Papoesche vrouw (gehuwd) (Portrait…
Modelwoning, zooals te "Dorei", Roon, enz. (Drawing of a house…
Bewoner van het eiland Waigeoe (Portrait of a Papua man inhabitant…
Eiland Waigeoe Noordkust N. Guinea (Portrait of a Papua man…
Eiland Waigeoe N. Kust N. Guinea (Portrait of a Papua man inhabitant…
De Kimelaha van Oesba eiland Waigeoe (Portrait of a Papua man…
Kamponghoofd van Fofag eiland Waigeoe (Portrait of head of Kampoeng…
Eiland Waigeoe (Portrait of a Papua man, an inhabitant from…
Waigeoe (Portrait of a Papua man, an inhabitant from the island…
Bewoner van het eiland Waigeoe (Portrait of a Papua man, an…
Moemoes Soekaboemi eiland Waigeoe (Portrait of an Indonesian…
Kino van het eiland Waigeoe (Portrait of a Papua child from…
Moemoes - Soekaboemi eiland Waigeoe (Portrait of a Papua man…
Moemoes - Soekaboemi eiland Waigeoe (Portrait of a Indonesian…
Kapitein laoet Napirboi (Eiland Waigeoe) (Portrait of Captain…
Konferensi Wapres di Kedutaan Jerman oleh Dr. Haus Guen Ther…
The Indian Historical Quarterly
2 April 1972 [gambar] : band "The Bee Gees" di Indonesia tiba…
22 Mei 1972 [gambar] : Musik Kolintang " The Wewenangs" pimpinan…
Holland and Belgium their common history and their relations…
Sedjarah raja-raja Riau : some aspects, as told by the Jakarta…
History of the conquest of Mexico with a preliminary vieuw of…
History of the conguest of Peru with a preliminary vieuw of…
Penemuan kembali revolusi kita = The rediscovery of our revolution…
Notes on the geological, features of Singapore and some of the…
Eenig berigt aangaande den onderaardschen weg, welke onder het…
Serah terima [gambar] : Masagung menerima kitab suci Alqur'an…
Theorie der rekenkunde / P. Wijdenes
The presidency-towns insolvency act, 1909 (III of 1909) : as…
Mandarin hotel, the Jakarta [gambar] : rapat bersama antar partner…
The Netherlands Indies during the depression : a brief economic…
Arsitektur [gambar] : gereja Katholik Roma "Kathedral" di jl.…
Kunjungan ke Yay. Idayu [gambar] : - AKD Townsend, The Hongkong…
De l'astronomie et des mathematiques ches les Chinois :llettre…
Selamatan [gambar] : upacara selamatan bagi keselamatan para…
Pameran philateli [gambar] : pameran philateli pekan PBB menyambut…
Pembangunan Gedung [gambar] : 8 September, The Jakarta Mandarin…
Ceramah [gambar] : nn. Mastini Hardjoprakoso Mls., J.N.B. Tairas…
Kunjungan ke Yay. Idayu [gambar] : Bernard Dahn dari Jerman…
Kunjungan ke Yay. Idayu [gambar] : pemuda-pemuda peserta kapal…
Kunjungan ke Yay. Idayu [gambar] : calon-calon karyawati the…
Tahun baru, Mas Agung dan Ibu AYu Agung dll [gambar] : bertahun…
Hari Kebangkitan Nasional [gambar] : upacara pembukaan peringatan…
Kunjungan ke Yay. Idayu [gambar] : kunjungan ke Yay. Idayu Mr.…
Perkenalan, pesta [gambar] : Direksi "Astra" tg. November 1979…
OG. Roeder potret diri, penulis buku biografi Pres. Soeharto…
Seminar [gambar] : Seminar lembaga pendidikan dan pembinaan…
Lambang [gambar] : lambang "GANEFO" (Games of the New Emerging…
Konperensi [gambar] : third conference of Southeast Asian librarian…
Diskusi [gambar] : diskusi panel menyongsong seperempat abad…
Wongsonegoro, Mr. [gambar] : reproduksi dari buku illustration…
Kunjungan Mr. Enloe Willengham dari Trans Cendental meditation…
The Malayan words in English / by Charles Payson Gurley Scott
The Illustrated handbook of architecture : being a concise and…
The Red influence in China / by Reizo Otsuka
Buku [gambar] : Bapak Soemarmo menyerahkan sebuah buku "the…
Misa duka (requiem) tri pria untuk alm. Dr. Moh. Hatta dipersembahkan…
Potret diri [gambar] : Adisuria (The Kie Hoat) :
Pameran [gambar] : pembukaan pameran kesehatan dengan thema…
Potret diri [gambar] : Ris Therik :
The magic of chemistry / Herbert Mckay
Media pers [gambar] : The Asian wall street journal tgl. 5 Agustus…
Gambar bersama [gambar] : 19 orang pelajar KEMPEN yang sedang…
Kunjungan ke pt. gunung agung [gambar] : para komisaris pt.…
Kunjungan ke Yay. Idayu (gambar) : 35 orang peserta kapal pemuda…
Surat [gambar] : surat "kata sambutan" Let. Jend. Soeharto atas…
The coming peace and social democracy / by H.H. van Kol
General guide to the American Museum of natural history
Generalisations et Modifications D`un theoreme de Frobenius…
A Ueber Wert und angeblichen Unwert der Mathematik / Von Alfred…
A Study of the conditions for solar research at mouth wilson,…
The Solar observatory of the carnegie institution of Washington…
The United States Coast and Geodetic Survey : Its work in surveying…
"Kruimpjes" leerboek met spreek- en taaloefeningen en plaatjes…
The historical development of the labour relationship in a remote…
The monetary policy of Manchooukuo / by Kyoroku Yamanari
Tempat suci [gambar] : tempat pemujaan Theta Gunung Meru di…
Sino-Japanese relations since the Tangku Truce, May 31,1933…
Theoretisch en practisch bouwkundig handboek, ten dienste van…
Perhimpunan Indonesia and the Indonesian Nationalist Movement…
Guide to the royal ontario museum
The Indonesian herald : messenger of the nation's indentity…
Diplomatic machinery in the Pacific Area / by Quincy Wright
De Theodolietboussole van hildebrand
Islam adalah agama kehidupan dan perdjoeangan = (The Religion…
Kunjungan ke Istana Jakarta [gambar] : presiden Soeharto menerima…
How the NRA worked / Robinson Newcomb
A Guide to the old observatories at Delhi : Jaipur ; Ujjain…
Boven Soengai Gaoeng [peta]/ The Chief of engineers, U.S. Army
Teloekmeranti [peta] / The Chief of engineers, U.S. Army
Tasik Besarserkap [peta]/ The Chief of engineers, U.S. Army
Monetary Reform and federal Insurance the way out / by Adolf…
Einfuhrung in die mathematische logik und in die methodologie…
Soeak [peta]/ The Chief of engineers, U.S. Army
Selatpandjang [peta] / The Chief of engineers, U.S. Army
Pondokselapan [peta]/ The Chief of engineers, U.S. Army
Pondokselapan [peta]/ The Chief of engineers, U.S. Army
De Repetitietheodoliet van Hildebrandh
Business and goverment under the national recovery administration…
Dolokmasihoel [peta] / The Chief of Engineers, U.S. Army
The Philosophy of the revolution / Gamal Abd. El-Nasser
Eclipses of the moon in India / by Robert Sewell
Saroematinggi [peta]/ The Chief of engineers, U.S. Army
Pasar Si Boehoean [peta]/ The Chief of engineers, U.S. Army
Hoeta Radja Tinggi [peta]/ The Chief of engineers, U.S. Army
Sawahloento [peta]/ The Chief of Engineers, U.S. Army
Koebanginadoeo [peta]/ The Chief of Engineers, U.S. Army
Padangganting [peta]/ The Chief of Engineers, U.S. Army
Fort Van Der Capellan [peta]/ The Chief of Engineers, U.S. Army
The Northern sea route as a transport problem/ by Semion Joffe
Indices of socialist construction in the Union of soviet socialist…
Bangko [peta] / The Chief of engineers, U.S. Army
Poelaudaro [peta] / The Chief of engineers, U.S. Army
Moearatebo [peta] / The Chief of engineers, U.S. Army
Doesoenrambahan [peta]/ The Chief of engineers, U.S. Army
Loboektanahliat [peta]/ The Chief of engineers, U.S. Army
Pangkalankasai [peta] / The Chief of engineers, U.S. Army
Danaubaroe [peta]/ The Chief of engineers, U.S. Army
Labour conditions in the men's clothing industry / F.B. Scott…
The Foreign trade policy of the United states/ William W. Lockwood
Si Galanggang [peta]/ The Chief of engineers, U.S. Army
Padang Pandjang [peta ] / The Chief of Engineers, U.S. Army
Padanglawas [peta] / The Chief of Engineers, U.S. Army
Tikoe [peta]/ The Chief of Engineers, U.S. Army
Pakandangan [peta]/ The Chief of Engineers, U.S. Army
Goegoekrandah [peta]/ The Chief of Engineers, U.S. Army
Aoermalintang [peta]/ The Chief of Engineers, U.S. Army
Pariaman [peta]/ The Chief of Engineers, U.S. Army
Kotoranah [peta]/ The Chief of Engineers, U.S. Army
Air Bartoemboek [peta]/ The Chief of Engineers, U.S. Army
Kotopandjang [peta]/ The Chief of Engineers, U.S. Army
Nanggalo [peta]/ The Chief of Engineers, U.S. Army
P. Bintanggor [peta]/ The Chief of Engineers, U.S. Army
Kunjungan ke Istana Jakarta [gambar] : presiden Soeharto menerima…
Solok [peta] / The Chief of engineers, U.S. Army
Pelajangan [peta]/ The Chief of engineers, U.S. Army
Belimbing (Soewosoewo) [peta] / The Chief of engineers, U.S.…
Seberida [peta]/ The Chief of engineers, U.S. Army
Nature and natural resources of the Soviet far east
The Forest wealth of the Soviet far east and its exploitation…
The Present phase of economic and social development in the…
Public works and unemployment relief in the united states/ Arthur…
Padang [peta ] / The Chief of engineers, U.S. Army
Poelau Marak [peta] / The Chief of engineers, U.S. Army
Rengat [peta] / The Chief of engineers, U.S. Army
Boeo [peta] / The Chief of engineers, U.S. Army
Padang Pandjang [peta] / The Chief of engineers, U.S. Army
Pariaman [peta]/ The Chief of engineers, U.S. Army
Tikoe [peta]/ The Chief of engineers, U.S. Army
Taroesan [peta]/ The Chief of engineers, U.S. Army
Tapan [peta]/ The Chief of engineers, U.S. Army
Sakeanlosong [peta]/ The Chief of engineers, U.S. Army
Pangkalanpasir [peta] / The Chief of engineers, U.S. Army
Pelalawan [peta]/ The Chief of engineers, U.S. Army
Siak Sri Indrapoera [peta] / The Chief of engineers, U.S. Army
Loeboekmoeda [peta]/ The Chief of engineers, U.S. Army
Bengkalis [peta]/ The Chief of engineers, U.S. Army
Kunjungan ke Idayu, Yayasan [gambar] : kunjungan Maria Jl. Schiltman,…
Poster pesta musik FIPIA-UI'80' The Hawaiian Senior & Hula Dance…
Sawah Loento [peta] / The Chief of engineers, U.S. Army
Binanga [peta]/ The Chief of engineers, U.S. Army
Goenoeng Toea [peta] / The Chief of engineers, U.S. Army
Singkoeang [peta]/ The Chief of engineers, U.S. Army
Moearo Tais [peta] / The Chief of engineers, U.S. Army
Hoeta Nopan [peta]/ The Chief of engineers, U.S. Army
Poeak [peta]/ The Chief of engineers, U.S. Army
Batoepandjang [peta]/ The Chief of engineers, U.S. Army
Titinaka [peta]/ The Chief of engineers, U.S. Army
Soengailangsat [peta] / The Chief of engineers, U.S. Army
Tandjoengpaoeh [peta]/ The Chief of engineers, U.S. Army
Danaudipekan [peta]/ The Chief of engineers, U.S. Army
Tjerinti [peta]/ The Chief of engineers, U.S. Army
Pramuka [gambar] : Ketua Kwarnas Pramuka, Sultan Hamengku Buwono…
The south Manchuria railway company's part in the economic development…
Soengaipenoeh [peta] / The Chief of engineers, U.S. Army
Indrapoera [peta]/ The Chief of engineers, U.S. Army
Semoeroep [peta]/ The Chief of engineers, U.S. Army
Sioelakmoekei [peta]/ The Chief of engineers, U.S. Army
Tandjoeng Medan [peta] / The Chief of engineers, U.S. Army
Painan [peta] / The Chief of engineers, U.S. Army
Pasir Talang [peta] / The Chief of engineers, U.S. Army
Alahan Pandjang [peta]/ The Chief of engineers, U.S. Army
The easy readers : containing twenty selected lessons for morning…
Panjaboengan [peta] / The Chief of engineers, U.S. Army
Koekoen [peta]/ The Chief of engineers, U.S. Army
Padang Sidimpoean [peta] / The Chief of engineers, U.S. Army
Ranto Pandjang [peta]/ The Chief of engineers, U.S. Army
Pasarsorkam [peta]/ The Chief of engineers, U.S. Army
Djawidjawi [peta]/ The Chief of Engineers, U.S. Army
Solok [peta] / The Chief of Engineers, U.S. Army
Koto Baharoe [peta] / The Chief of Engineers, U.S. Army
Loeboekbargaloeng [peta]/ The Chief of Engineers, U.S. Army
Oelakan [peta]/ The Chief of Engineers, U.S. Army
Korte praktische en theoretische beschrijving van den electro-macnetischen…
Loeboekaloeng [peta]/ The Chief of Engineers, U.S. Army
Padang [peta] / The Chief of Engineers, U.S. Army
Bali the isle of Gods
20 Desember 1976 [gambar] : Pelabuhan "Cigading" Cilegon ; dikerjakan…
Instructions for observing the transit of venus, December 6,1882
America in perspective : the United States through foreign eyes.…
Kennis van gereedschappen en materialen en de beginselen der…
The Grave-post (Anisan) of the Batak of Asahan / Harley Hrris…
The Bengal code in five volumes : constaining the regulations…
The Chinese in Indonesia / ed. J.A.C. Mackie
Toelichting op de theerestrictje ordonnantie 1938 en theerestrichtie…
On the working of punkahs in India as at present carried out…
Some remarks on the wages paid in the Netherlands Indies / by…
Second book of sanskrit : a treatise on grammar [with exercises]…
141 questions and answer about the Republic of China
Vrijmetselarij : geschiedenis, maatschapelijke beteekenis en…
Beauty and the beast / directed by Gary Traousdale, Kirk Wise…
The religion of the Bare'e-speaking Toraja of central Celebes…
A pageant of the spice islands / by R.H. Crofton
Guide to the Greek, Roman English and Chinese coins / editor,…
The Achehnese / Snouck C. Hurgronje ; translated by A. W. S.…
Sourat a, b, c, jang bergouna banja capada anac bouda bouda…
The food consumption of the native inhabitants of java and madura…
Eclipses of the moon in India / Rob Sewell
An Attempt to elucidate the principles of Malayan orthography…
Comparative vocabulary of the Barma, Malayu and Thai languages…
Provisional constitution of the Republic of Indonesia
Bahoewa ini kitab tadjoelsalathen ja-itoe makoetha segala radja
Human law and the laws of nature in China and the west / Joseph…
Constitution (Fundamental law) of the Union of Soviet Socialist…
Notes on Hindu astronomy and the history of our knoeledge of…
Theorie de la chronologie ancienne, civile et naturelle, appliquâee…
Perkenalan pesta [gambar] : Masagung bersalaman dengan pimpinan…
Treaties and the constitutional separationn of the powers in…
The Asiatic journal and monthly register for british and foreign…
The Asiatic journal and monthly register for british and foreign…
The character of far eastern history : an inaugural lecture…
A brief history of the United States / by Franklin Escher
The architectural review : a magazine off architecture & decoration
The architectural review : a magazine off architecture & decoration
The architectural review : a magazine off architecture & decoration
The Asiatic journal and monthly register for british and foreign…
The Asiatic journal and monthly register for british and foreign…
Shooting fim [gambar] : film "The Night of the Iquana" prod.…
15 Mei 1972 [gambar] : Batik Keris rapat pertama panitya The…
10 Mei 1972 [gambar] : Ratulangie, Nj. (Nj. Maria Catherina…
• Tampilkan lebih banyak