Book 928,053 Thesis 137,412 Conference Proceeding 102,296 Government Document 65,548 Electronic 41,396 Serial 21,068 Journal 20,974 Unknown 6,907 Kit 4,279 Manuscript 1,116 Photo 900 Book Chapter 507 Audio 475 Reference Material 335 Map 141 Newspaper 94 Musical Score 36 Physical Object 35 Article 7 see all ...

SpringerLink (Online service) 18,814 Adam Matthew Digital (Firm) 14,100 Society of Photo-optical Instrumentation Engineers 11,847 Massachusetts Institute of Technology Department of Electrical Engineering and Computer Science 10,709 Institute of Electrical and Electronics Engineers 9,486 ebrary, Inc 9,269 IEEE Xplore (Online service) 9,104 Massachusetts Institute of Technology Department of Mechanical Engineering 8,788 Culinary Collection (University of Pennsylvania) 7,464 United States Bureau of Mines 6,205 Sloan School of Management 5,810 United States National Aeronautics and Space Administration 5,783 ProQuest (Firm) 5,640 Chef Fritz Blank Culinary Archive and Library (University of Pennsylvania) 5,527 Laurie Burrows Grad Collection (University of Pennsylvania) 5,307 Langley Research Center 4,089 Society of Photo-Optical Instrumentation Engineers 3,536 SPIE (Society) 2,924 National Research Council (U.S.) Transportation Research Board 2,855 Geological Survey (U.S.) 2,784 United States General Accounting Office 2,639 Lewis Research Center 2,628 IEEE Computer Society 2,564 Massachusetts Institute of Technology Department of Aeronautics and Astronautics 2,510 United States Federal Highway Administration 2,264 Massachusetts Institute of Technology Department of Physics 2,176 Massachusetts Institute of Technology Department of Materials Science and Engineering 2,151 Massachusetts Institute of Technology Department of Urban Studies and Planning 2,110 Massachusetts Institute of Technology Department of Civil and Environmental Engineering 1,885 American Society for Testing and Materials 1,782 see all ...

Congresses 122,954 Conference papers and proceedings 86,713 Electronic books 78,477 Periodicals 30,847 History 21,303 Pictorial works 19,931 Exhibitions 19,700 Cookbooks 17,433 Handbooks, manuals, etc 15,862 Technical reports 15,667 Exhibition catalogs 13,024 Handbooks and manuals 11,068 Catalogs 8,973 Biography 8,906 Livres de cuisine 6,576 cookbooks 6,512 Biographies 6,022 Dictionaries 5,689 Congrès 4,725 Illustrated works 4,715 Directories 4,443 Photobooks 3,943 Statistics 3,707 Cookbook 3,558 Portraits 3,499 Electronic journals 3,359 Juvenile literature 2,732 Case studies 2,702 Bibliography 2,558 Academic theses 2,304 see all ...

20th century 8,421 19th century 3,822 21st century 3,613 1900-1999 2,742 2000-2099 1,877 1800-1899 920 1900 - 1999 881 Early works to 1800 611 20e siècle 594 18th century 483 1964- 455 1946- 451 21e siècle 443 1938- 427 1953- 424 1952- 419 1955- 413 1944- 412 1958- 398 1900-2099 394 1949- 387 1954- 383 1957- 377 1971- 372 1970- 363 1951- 357 1945- 355 1961- 353 1956- 348 1968- 342 see all ...

United States 61,143 Great Britain 10,889 California 7,046 India 5,716 New York (State) 5,666 England 5,342 Canada 4,132 Japan 3,860 China 3,594 France 3,466 Massachusetts 3,461 Europe 3,408 New York 3,358 Australia 3,101 Pennsylvania 3,017 Germany 3,012 Italy 2,292 London 2,081 Developing countries 2,032 Illinois 1,981 London (England) 1,759 West Indies 1,699 Texas 1,618 Indonesia 1,516 États-Unis 1,513 Malaysia 1,425 South Africa 1,421 Singapore 1,343 Philippines 1,288 North Carolina 1,247 see all ...