Book 928,954 Thesis 137,416 Conference Proceeding 102,428 Government Document 65,555 Electronic 41,397 Serial 21,082 Journal 20,982 Unknown 6,910 Kit 4,279 Manuscript 1,118 Photo 903 Book Chapter 508 Audio 476 Reference Material 335 Map 141 Newspaper 94 Musical Score 36 Physical Object 35 Article 7 see all ...

SpringerLink (Online service) 18,902 Adam Matthew Digital (Firm) 14,100 Society of Photo-optical Instrumentation Engineers 11,835 Massachusetts Institute of Technology Department of Electrical Engineering and Computer Science 10,709 Institute of Electrical and Electronics Engineers 9,585 ebrary, Inc 9,268 IEEE Xplore (Online service) 9,108 Massachusetts Institute of Technology Department of Mechanical Engineering 8,788 Culinary Collection (University of Pennsylvania) 7,465 United States Bureau of Mines 6,205 Sloan School of Management 5,810 United States National Aeronautics and Space Administration 5,786 ProQuest (Firm) 5,610 Chef Fritz Blank Culinary Archive and Library (University of Pennsylvania) 5,528 Laurie Burrows Grad Collection (University of Pennsylvania) 5,308 Langley Research Center 4,089 Society of Photo-Optical Instrumentation Engineers 3,574 SPIE (Society) 2,925 National Research Council (U.S.) Transportation Research Board 2,856 Geological Survey (U.S.) 2,784 United States General Accounting Office 2,639 Lewis Research Center 2,628 IEEE Computer Society 2,567 Massachusetts Institute of Technology Department of Aeronautics and Astronautics 2,510 United States Federal Highway Administration 2,275 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 123,089 Conference papers and proceedings 86,843 Electronic books 78,395 Periodicals 30,873 History 21,330 Pictorial works 19,992 Exhibitions 19,748 Cookbooks 17,486 Handbooks, manuals, etc 15,871 Technical reports 15,670 Exhibition catalogs 13,068 Handbooks and manuals 11,071 Catalogs 8,981 Biography 8,923 Livres de cuisine 6,611 cookbooks 6,547 Biographies 6,040 Dictionaries 5,689 Congrès 4,742 Illustrated works 4,724 Directories 4,447 Electronic journals 4,339 Photobooks 3,974 Statistics 3,710 Cookbook 3,573 Portraits 3,509 Juvenile literature 2,746 Case studies 2,707 Academic theses 2,630 Bibliography 2,558 see all ...

20th century 8,449 19th century 3,831 21st century 3,628 1900-1999 2,753 2000-2099 1,886 1800-1899 923 1900 - 1999 883 Early works to 1800 611 20e siècle 610 18th century 484 21e siècle 458 1964- 455 1946- 453 1938- 427 1953- 424 1952- 420 1955- 417 1944- 413 1958- 400 1900-2099 394 1949- 387 1954- 384 1957- 378 1971- 372 1970- 364 1951- 357 1945- 355 1961- 353 1956- 348 1968- 345 see all ...

United States 61,186 Great Britain 10,897 California 7,049 India 5,725 New York (State) 5,672 England 5,347 Canada 4,134 Japan 3,873 China 3,606 France 3,476 Massachusetts 3,467 Europe 3,413 New York 3,360 Australia 3,103 Germany 3,017 Pennsylvania 3,015 Italy 2,294 London 2,082 Developing countries 2,034 Illinois 1,983 London (England) 1,759 West Indies 1,699 Texas 1,619 États-Unis 1,528 Indonesia 1,516 Malaysia 1,426 South Africa 1,420 Singapore 1,343 Philippines 1,288 North Carolina 1,247 see all ...