Llyfr 80,403 Cyfresol 5,651 Cylchgrawn 3,038 Dogfen y Llywodraeth 2,655 Trafodyn Cynhadledd 711 Traethawd Ymchwil 427 Electronig 424 Cit 132 Pennod Llyfr 83 Map 69 Llawysgrif 67 Deunydd Cyfeirio 17 Anhysbys 16 Erthygl 10 Sgôr Cerddorol 9 Sain 6 Papur Newydd 3 Llun 3 Gweld pob un ...

Z - Gwyddor Llyfrgell 44,593 C - Gwyddorau Hanesyddol 4,702 D - Hanes y Byd 3,811 P - Iaith a Llenyddiaeth 2,764 H - Gwyddor Gymdeithasol 2,413 K - Y Gyfraith 2,114 M - Cerddoriaeth 1,983 F - Hanes Americanaidd Cyffredinol 1,073 Q - Gwyddoniaeth 940 B - Athroniaeth, Seicoleg, Crefydd 873 N - Celfyddyd Gain 613 L - Addysg 586 E - Hanes yr Unol Daleithiau 584 G - Daearyddiaeth, Anthropoleg, Hamdden 574 A - Gwaith Cyffredinol 568 J - Gwyddor Gwleidyddiaeth 522 R - Meddygaeth 350 S - Amaethyddiaeth 306 T - Technoleg 295 U - Gwyddor Filwrol 90 V - Gwyddor Lyngesol 32 Gweld pob un ...

Library of Congress Congressional Research Service 438 Library of Congress 325 Geological Survey (U.S.) 292 Harris Collection of American Poetry and Plays (Brown University) Reference Works 223 Library of Congress Division of Bibliography 223 Gotham Book Mart Collection (University of Pennsylvania) 219 Great Britain Public Record Office 197 Vance, Mary A 195 Fiske Icelandic Collection 191 White, Anthony G 185 Horace Howard Furness Memorial Library (University of Pennsylvania) 173 Harmon, Robert B (Robert Bartlett), 1932- 143 National Criminal Justice Reference Service (U.S.) 138 United States National Archives and Records Service 135 Archivo General de la Nación (Mexico) 131 Gosudarstvennai︠a︡ publichnai︠a︡ biblioteka imeni M.E. Saltykova-Shchedrina 126 Gosudarstvennai︠a︡ biblioteka SSSR imeni V.I. Lenina 121 Archives nationales (France) 119 United States Bureau of the Census 118 Institut nauchnoĭ informat︠s︡ii po obshchestvennym naukam (Akademii︠a︡ nauk SSSR) 111 New York Public Library 109 National Archives (U.S.) 108 Akademii︠a︡ nauk SSSR Biblioteka 107 British Library 103 McMurtrie, Douglas C (Douglas Crawford), 1888-1944 103 Fraunhofer-Gesellschaft Informationszentrum Raum und Bau 102 Archivo General de la Nación (Mexico) 98 Library of Congress Legislative Reference Service 97 David E. Pingree Collection (Brown University) 96 Gosudarstvennai͡a publichnai͡a biblioteka imeni M.E. Saltykova-Shchedrina 95 Gweld pob un ...

English 48,510 French 7,517 German 7,394 Spanish 5,654 Russian 4,865 Chinese 3,319 Italian 2,965 Japanese 2,726 Portuguese 1,317 Dutch 1,139 Polish 1,049 Arabic 762 Latin 708 Czech 602 Hebrew 583 Multiple 554 Ukrainian 455 Korean 413 Turkish 394 Swedish 361 Hungarian 352 Danish 326 Indonesian 324 Greek 307 Bulgarian 288 Persian 269 Croatian 210 Slovak 186 Thai 184 Norwegian 174 Gweld pob un ...

Bibliography 63,700 Bibliographies 35,202 Catalogs 17,248 History 13,845 Periodicals 5,826 Imprints 2,414 bibliographies 2,151 Biography 1,963 Sources 1,926 Criticism, interpretation, etc 1,656 Indexes 1,351 Union lists 1,337 Biographies 1,323 Union catalogs 1,305 Bibliographie 1,145 Directories 1,032 Exhibitions 1,010 Bio-bibliography 857 Exhibition catalogs 836 Catalogues 771 Bibliography of bibliographies 713 Local history 688 Abstracts 646 Union lists (Library catalogs) 618 catalogs (documents) 566 Maps 475 Congresses 452 Church history 437 Microform catalogs 426 Early works to 1800 421 Gweld pob un ...

20th century 2,519 19th century 1,226 1900-1999 1,080 18th century 956 1900 - 1999 797 16th century 708 17th century 576 1945- 402 1800-1899 392 1700-1799 341 1500-1599 290 Revolution, 1789-1799 264 1800 - 1899 260 1939-1945 234 Since 1945 216 Early modern, 1500-1700 214 1700 - 1799 189 Civil War, 1861-1865 186 Early works to 1800 178 Revolution, 1775-1783 172 Colonial period, ca. 1600-1775 161 1600-1699 155 1564-1616 145 1500 - 1599 136 To 1500 132 1939 - 1945 130 1800-1999 124 1933-1945 118 1500 - 1700 113 Revolution, 1917-1921 110 Gweld pob un ...