Book 31,968 Conference Proceeding 3,400 Electronic 1,376 Journal 1,371 Government Document 913 Serial 813 Thesis 213 Unknown 185 Kit 31 Audio 16 Photo 16 Book Chapter 8 Reference Material 8 Manuscript 7 Newspaper 5 Physical Object 3 Musical Score 1 see all ...

T - Technology 34,563

Society of Photo-optical Instrumentation Engineers 624 ebrary, Inc 441 SpringerLink (Online service) 322 ProQuest (Firm) 262 Society of Photo-Optical Instrumentation Engineers 208 International Correspondence Schools 175 Society of Manufacturing Engineers 170 IEEE Xplore (Online service) 147 Technical Association of the Pulp and Paper Industry 141 Forest Products Laboratory (U.S.) 133 Institute of Electrical and Electronics Engineers 121 American Society of Mechanical Engineers Winter Annual Meeting 111 Textile Institute (Manchester, England) 99 American Society of Mechanical Engineers Pressure Vessels and Piping Division 94 British Intelligence Objectives Sub-Committee 92 SPIE (Society) 92 Autofact 85 Davim, J. Paulo 84 National Institute of Standards and Technology (U.S.) 77 American Society for Testing and Materials 67 American Foundrymen's Society 66 Gotham Book Mart Collection (University of Pennsylvania) 66 Edgar Fahs Smith Memorial Collection (University of Pennsylvania) 65 Adam Matthew Digital (Firm) 63 American Society of Mechanical Engineers Production Engineering Division 61 International Federation of Automatic Control 60 American Management Association 59 American Welding Society 59 American Society of Mechanical Engineers Winter Meeting 57 IS & T--the Society for Imaging Science and Technology 57 see all ...

Congresses 4,210 Electronic books 3,323 Conference papers and proceedings 3,137 Periodicals 1,617 History 1,402 Catalogs 916 Handbooks, manuals, etc 752 Handbooks and manuals 469 Dictionaries 392 Directories 320 Biography 280 Exhibitions 278 Congrès 244 Case studies 212 Biographies 203 Exhibition catalogs 193 Technical reports 172 Pictorial works 171 Electronic journals 164 Sample books 164 Trade catalogs 149 Specimens 145 Statistics 128 Tables 101 Juvenile literature 95 Patents 93 Bibliography 92 Périodiques 87 Guides, manuels, etc 82 Electronic book 65 see all ...

20th century 255 19th century 119 21st century 63 1900-1999 59 18th century 46 1800-1899 39 1900 - 1999 37 To 1500 36 1883-1966 31 Early works to 1800 28 1814-1862 23 1939-1945 23 1768-1835 22 17th century 22 1800-1860 22 2000-2099 22 1765-1825 20 1800-1999 17 1732-1792 16 1700-1799 14 1900-1993 13 1800 - 1899 12 Geschichte 12 1753-1827 10 1898-1960 10 Colonial period, ca. 1600-1775 10 1893-1986 9 1728-1809 8 1900-2099 7 1702-1759 6 see all ...

United States 1,806 Great Britain 453 England 280 India 250 Germany 245 Japan 213 Canada 132 Europe 120 Pennsylvania 111 Massachusetts 110 Italy 105 China 95 New York (State) 91 Developing countries 60 California 56 France 56 Australia 53 États-Unis 49 New York 49 Scotland 47 North America 43 North Carolina 43 Switzerland 42 New England 38 West (U.S.) 36 Nigeria 35 Connecticut 33 Southern States 33 London 31 Netherlands 31 see all ...