Book 622,500 Government Document 21,590 Serial 19,981 Conference Proceeding 14,630 Electronic 12,142 Journal 10,871 Thesis 9,573 Unknown 5,073 Book Chapter 3,991 Reference Material 1,160 Audio 485 Kit 353 Manuscript 329 Photo 201 Newspaper 150 Musical Score 54 Map 42 Physical Object 11 Article 10 see all ...

Library of Congress Congressional Research Service 5,493 United States 5,147 ebrary, Inc 4,686 De Gruyter 3,546 ProQuest (Firm) 2,846 United States Department of State 2,461 SpringerLink (Online service) 2,379 United States General Accounting Office 1,744 Adam Matthew Digital (Firm) 1,733 Great Britain 1,403 Service Center for Chinese Publications 1,061 Taylor & Francis 947 League of Nations 925 ProQuest ebook central 898 United States Congress. Senate. Committee on Foreign Relations 878 Taylor & Francis eBooks 794 United Nations 782 Organisation for Economic Co-operation and Development 736 Council of State Governments 672 Cambridge University Press 657 Human Rights Watch (Organization) 649 France 615 Amnesty International 593 United States Congress. Senate. Committee on the Judiciary 542 United States Congress. House. Committee on Foreign Affairs 531 Council of Europe 509 EBSCOhost 498 United States Congress. Commission on Security and Cooperation in Europe 497 United States Congress House 489 United States Congress. House. Committee on the Judiciary 480 see all ...

English 353,773 French 55,728 Spanish 52,673 German 49,413 Russian 27,258 Chinese 26,618 Italian 21,719 Japanese 19,582 Arabic 12,187 Portuguese 10,239 Korean 7,009 Polish 5,898 Indonesian 5,897 Dutch 5,001 Turkish 3,953 Swedish 2,883 Latin 2,753 Hebrew 2,435 Persian 2,434 Greek 2,119 Ukrainian 2,080 Czech 1,781 Vietnamese 1,630 Croatian 1,620 Danish 1,400 Hungarian 1,337 Romanian 1,268 Bulgarian 1,213 Hindi 1,182 Thai 1,087 see all ...

History 62,231 Electronic books 35,897 Congresses 24,506 Periodicals 21,065 Conference papers and proceedings 16,959 Sources 10,346 Biography 8,965 Case studies 6,882 Statistics 6,265 Dictionaries 5,574 Early works to 1800 5,569 Biographies 5,098 Directories 4,404 Handbooks, manuals, etc 4,281 Academic theses 4,238 Thèses et écrits académiques 3,538 Bibliography 2,962 Handbooks and manuals 2,840 Registers 2,767 Early works 2,652 Treaties 2,019 Academic Dissertation 1,828 dissertations 1,669 Interviews 1,580 doctoral dissertations 1,559 masters theses 1,559 theses 1,559 Aufsatzsammlung 1,448 Registers (Lists) 1,410 Bibliographies 1,405 see all ...

20th century 27,268 21st century 20,516 1945- 10,667 1900-1999 10,374 2000-2099 8,773 1989- 6,252 19th century 6,147 Since 1945 5,578 1991- 5,168 1945-1989 3,552 1900 - 1999 3,539 Since 1989 2,876 1980- 2,806 1990- 2,724 1960- 2,715 Since 1991 2,625 21e siècle 2,327 18th century 2,190 2000 - 2099 2,001 2002- 1,785 20e siècle 1,732 1800-1899 1,612 1994- 1,559 Early works to 1800 1,495 Since 1900 1,471 1947- 1,467 17th century 1,427 1951- 1,418 1988- 1,400 1974- 1,342 see all ...

United States 84,694 China 23,130 Great Britain 21,481 Europe 19,345 France 17,509 Germany 16,376 Japan 13,071 India 11,892 Italy 11,694 Soviet Union 10,657 Russia (Federation) 10,060 European Union countries 8,448 Spain 8,272 Mexico 8,113 Latin America 6,401 Indonesia 6,276 Canada 6,151 Brazil 5,685 Africa 5,574 Turkey 5,027 Korea (South) 4,774 Poland 4,593 Germany (West) 4,410 Argentina 4,303 Russia 3,666 Australia 3,434 Nigeria 3,409 Colombia 3,400 Greece 3,373 Israel 3,247 see all ...