Llyfr 50,565 Trafodyn Cynhadledd 8,296 Electronig 3,184 Dogfen y Llywodraeth 1,776 Cylchgrawn 1,514 Cyfresol 904 Traethawd Ymchwil 504 Anhysbys 287 Llawysgrif 18 Deunydd Cyfeirio 15 Cit 13 Papur Newydd 8 Map 7 Llun 3 Erthygl 2 Pennod Llyfr 2 Sain 1 Sgôr Cerddorol 1 Gweld pob un ...

T - Technoleg 53,699

SpringerLink (Online service) 2,024 Institute of Electrical and Electronics Engineers 758 IEEE Xplore (Online service) 612 ebrary, Inc 548 American Society of Mechanical Engineers 505 Center for Intelligent Control Systems (U.S.) 481 ProQuest (Firm) 468 Society of Photo-optical Instrumentation Engineers 366 American Society of Mechanical Engineers Winter Annual Meeting 345 American Society of Mechanical Engineers Heat Transfer Division 328 IEEE Robotics and Automation Society 307 International Federation of Automatic Control 287 United States Department of Energy 276 IEEE Control Systems Society 231 IEEE Industrial Electronics Society 209 International Energy Agency 177 American Society of Mechanical Engineers Winter Meeting 166 Institution of Mechanical Engineers (Great Britain) 160 Society of Automotive Engineers 139 ScienceDirect (Online service) 134 Organisation for Economic Co-operation and Development 120 Electric Power Research Institute 119 Society of Photo-Optical Instrumentation Engineers 117 International Mechanical Engineering Congress and Exposition 114 American Society of Mechanical Engineers Pressure Vessels and Piping Division 113 Wiley InterScience (Online service) 113 American Society of Mechanical Engineers Fluids Engineering Division 112 Massachusetts Institute of Technology Gas Turbine Laboratory 111 Alumni and Friends Memorial Book Fund 109 American Society of Mechanical Engineers Advanced Energy Systems Division 107 Gweld pob un ...

English 47,200 German 2,513 Russian 1,620 French 1,448 Chinese 470 Italian 386 Spanish 359 Japanese 326 Polish 129 Dutch 124 Arabic 82 Portuguese 79 Indonesian 69 Latin 65 Swedish 54 Turkish 52 Czech 51 Romanian 47 Korean 41 Undetermined 39 Multiple 37 Ukrainian 32 Hungarian 30 Greek 22 Vietnamese 22 Croatian 21 Danish 17 Bulgarian 14 Finnish 14 Thai 14 Gweld pob un ...

Congresses 9,727 Conference papers and proceedings 7,367 Electronic books 6,983 Periodicals 1,977 Handbooks, manuals, etc 1,396 History 1,160 Handbooks and manuals 1,058 Technical reports 1,002 Congrès 604 Dictionaries 421 Catalogs 415 Electronic journals 350 Early works to 1800 292 Biography 252 Statistics 243 Pictorial works 235 Early works 219 Tables 203 Juvenile literature 186 Biographies 164 Guides, manuels, etc 160 Directories 144 Problems, exercises, etc 144 Early works to 1850 131 Périodiques 116 Academic theses 111 Bibliography 110 Popular works 108 Electronic book 105 Guides et manuels 103 Gweld pob un ...

20th century 94 Early works to 1800 87 19th century 69 1452-1519 60 Early works to 1850 55 1781-1848 32 21st century 28 1736-1819 27 1900-1999 24 17th century 22 Geschichte 22 To 1500 21 18th century 20 1800-1899 18 1728-1809 16 1858-1913 16 16th century 15 2000-2099 13 1693-1756 12 1800-1999 12 1663-1729 11 1771-1833 10 1910-1974 10 1729-1766 9 1803-1859 9 15th century 8 1808-1890 8 1829-1905 8 1876-1941 8 20e siècle 8 Gweld pob un ...

United States 2,301 Great Britain 484 Germany 281 Soviet Union 201 India 194 France 193 Europe 186 Japan 184 California 173 Developing countries 169 Canada 168 China 166 England 151 Italy 130 European Union countries 89 Russia (Federation) 88 Netherlands 85 New York (State) 74 Indonesia 73 Asia 66 Brazil 66 Sweden 61 Australia 57 Spain 53 South Africa 48 Russia 46 Turkey 45 États-Unis 44 Africa 41 États-Unis 41 Gweld pob un ...