Βιβλίο 39.309 Πρακτικό Συνεδρίου 3.525 Επιστημονικό περιοδικό 1.649 Ηλεκτρονική πηγή 1.420 Κυβερνητικό Έγγραφο 914 Περιοδική έκδοση 908 Thesis 304 Άγνωστο 195 Εργαλειοθήκη 35 Ηχητικό 17 Φωτογραφία 17 Χειρόγραφο 11 Κεφάλαιο βιβλίου 8 Υλικό Αναφοράς 8 Εφημερίδα 5 Φυσικό αντικείμενο 3 Παρτιτούρα 2 Άρθρο 1 Χάρτης 1 Προβολή όλων ...

T - Τεχνολογία 42.296

Society of Photo-optical Instrumentation Engineers 624 ebrary, Inc 442 SpringerLink (Online service) 321 ProQuest (Firm) 288 Society of Photo-Optical Instrumentation Engineers 205 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 Edgar Fahs Smith Memorial Collection (University of Pennsylvania) 80 National Institute of Standards and Technology (U.S.) 77 American Society for Testing and Materials 67 De Gruyter 67 Gotham Book Mart Collection (University of Pennsylvania) 67 American Foundrymen's Society 66 Adam Matthew Digital (Firm) 64 John W. Hartman Center for Sales, Advertising & Marketing History 63 American Society of Mechanical Engineers Production Engineering Division 61 International Federation of Automatic Control 60 American Management Association 59 American Welding Society 59 Προβολή όλων ...

English 34.516 German 2.632 French 1.620 Russian 1.102 Japanese 879 Chinese 767 Italian 594 Spanish 463 Dutch 183 Korean 150 Polish 139 Swedish 127 Indonesian 110 Portuguese 110 Arabic 92 Czech 77 Turkish 65 Finnish 64 Undetermined 57 Danish 54 Latin 51 Vietnamese 48 Multiple 47 Hungarian 43 Persian 34 Hebrew 33 Norwegian 28 Thai 23 Slovak 22 Catalan 21 Προβολή όλων ...

Congresses 4.329 Electronic books 3.532 Conference papers and proceedings 3.224 History 2.515 Periodicals 1.950 Catalogs 1.075 Handbooks, manuals, etc 813 Dictionaries 569 Handbooks and manuals 515 Exhibitions 502 Biography 436 Directories 337 Exhibition catalogs 333 Biographies 283 Pictorial works 248 Congrès 244 Case studies 234 Sample books 207 Electronic journals 175 Technical reports 172 Early works to 1800 163 Specimens 158 Statistics 149 Trade catalogs 148 Juvenile literature 114 Tables 113 Bibliography 110 Patents 100 Early works 84 Périodiques 84 Προβολή όλων ...

20th century 400 19th century 191 1900-1999 110 21st century 95 18th century 77 1800-1899 66 To 1500 58 Early works to 1800 49 1900 - 1999 47 17th century 44 Geschichte 36 2000-2099 33 1883-1966 31 1800-1999 26 1939-1945 26 1700-1799 25 1814-1862 24 1768-1835 22 1800-1860 22 1765-1825 20 1732-1792 17 16th century 15 1800 - 1899 15 19e siècle 14 20e siècle 14 1900-1993 13 1747-1823 12 1919-2013 12 1893-1986 11 1898-1960 11 Προβολή όλων ...

United States 1.845 Japan 686 Germany 594 China 466 Great Britain 459 France 433 Italy 377 England 288 India 263 Soviet Union 224 Europe 185 Switzerland 142 Canada 133 Russia (Federation) 116 Pennsylvania 112 Indonesia 110 Massachusetts 110 New York (State) 91 Spain 88 Netherlands 85 Korea (South) 77 Sweden 72 Finland 68 Mexico 62 Russia 61 Developing countries 60 Korea 60 Poland 60 Turkey 58 Austria 57 Προβολή όλων ...