Book 1,090,400 Thesis 139,204 Conference Proceeding 106,665 Government Document 65,764 Electronic 42,585 Journal 25,896 Serial 23,836 Unknown 7,907 Kit 4,343 Manuscript 1,173 Photo 1,064 Audio 911 Book Chapter 614 Reference Material 335 Map 171 Newspaper 102 Musical Score 98 Physical Object 41 Article 14 see all ...

SpringerLink (Online service) 19,014 Adam Matthew Digital (Firm) 14,309 Society of Photo-optical Instrumentation Engineers 11,836 Massachusetts Institute of Technology Department of Electrical Engineering and Computer Science 10,711 Institute of Electrical and Electronics Engineers 9,618 ebrary, Inc 9,375 IEEE Xplore (Online service) 9,132 Massachusetts Institute of Technology Department of Mechanical Engineering 8,789 Culinary Collection (University of Pennsylvania) 8,086 United States Bureau of Mines 6,215 ProQuest (Firm) 5,950 Sloan School of Management 5,811 United States National Aeronautics and Space Administration 5,791 Chef Fritz Blank Culinary Archive and Library (University of Pennsylvania) 5,740 Laurie Burrows Grad Collection (University of Pennsylvania) 5,317 AM (Publisher) 4,199 Langley Research Center 4,089 Society of Photo-Optical Instrumentation Engineers 3,576 SPIE (Society) 2,927 National Research Council (U.S.) Transportation Research Board 2,856 Geological Survey (U.S.) 2,813 United States General Accounting Office 2,639 Lewis Research Center 2,628 IEEE Computer Society 2,568 Massachusetts Institute of Technology Department of Aeronautics and Astronautics 2,510 United States Federal Highway Administration 2,291 Massachusetts Institute of Technology Department of Physics 2,176 Massachusetts Institute of Technology Department of Materials Science and Engineering 2,152 Massachusetts Institute of Technology Department of Urban Studies and Planning 2,110 Massachusetts Institute of Technology Department of Civil and Environmental Engineering 1,885 see all ...

English 994,772 German 48,482 French 42,598 Russian 21,460 Spanish 21,188 Chinese 15,380 Italian 14,319 Japanese 12,231 Portuguese 5,116 Dutch 3,825 Korean 3,704 Polish 2,624 Indonesian 2,388 Arabic 1,920 Czech 1,893 Hebrew 1,849 Swedish 1,821 Vietnamese 1,815 Turkish 1,796 Multiple 1,415 Thai 1,189 Hungarian 1,017 Latin 939 Undetermined 918 Persian 913 Danish 892 Greek 827 Ukrainian 717 Finnish 703 Catalan 698 see all ...

Congresses 127,033 Conference papers and proceedings 89,791 Electronic books 82,400 Periodicals 37,191 History 36,614 Exhibitions 29,702 Pictorial works 27,765 Cookbooks 19,090 Exhibition catalogs 18,798 Handbooks, manuals, etc 17,547 Technical reports 15,702 Biography 15,296 Handbooks and manuals 12,298 Catalogs 11,324 Biographies 9,318 Dictionaries 8,727 Livres de cuisine 7,037 cookbooks 6,975 Illustrated works 5,431 Directories 5,018 Congrès 4,769 Portraits 4,702 Photobooks 4,610 Electronic journals 4,575 Statistics 4,286 Early works to 1800 4,003 Cookbook 3,777 Academic theses 3,286 Juvenile literature 3,060 Bibliography 3,006 see all ...

20th century 13,899 19th century 6,020 21st century 5,239 1900-1999 4,624 2000-2099 2,499 1800-1899 1,495 1900 - 1999 1,218 Early works to 1800 1,161 20e siècle 1,021 18th century 905 1800-1999 697 21e siècle 638 1946- 622 1945- 610 1944- 588 1955- 588 1938- 585 1952- 573 1964- 567 To 1500 564 1900-2099 562 1949- 547 1953- 533 1958- 527 1954- 523 1957- 520 1951- 485 1961- 474 1966- 466 1950- 463 see all ...

United States 62,358 Great Britain 11,724 China 10,360 France 10,237 Japan 10,097 Germany 9,029 California 7,113 Italy 6,849 India 6,182 New York (State) 5,765 England 5,533 Soviet Union 4,839 Europe 4,556 Canada 4,233 Mexico 3,798 Massachusetts 3,489 Russia (Federation) 3,447 New York 3,435 Indonesia 3,332 Spain 3,215 Australia 3,144 Brazil 3,140 Pennsylvania 3,049 South Africa 3,031 Developing countries 2,151 Russia 2,146 London 2,136 Netherlands 2,114 Illinois 2,003 Korea (South) 1,928 see all ...