Book 74,388 Government Document 12,947 Conference Proceeding 6,113 Electronic 2,531 Serial 2,013 Journal 1,754 Thesis 492 Unknown 442 Reference Material 53 Audio 39 Kit 39 Photo 28 Manuscript 24 Book Chapter 13 Map 1 Musical Score 1 Newspaper 1 see all ...

T - Technology 79,135

United States National Aeronautics and Space Administration 4,987 Langley Research Center 3,813 Lewis Research Center 2,400 United States National Aeronautics and Space Administration. Scientific and Technical Information Branch 1,121 Society of Automotive Engineers 1,118 United States Federal Aviation Administration 773 Goddard Space Flight Center 762 Ames Research Center 738 American Institute of Aeronautics and Astronautics 732 John Winston Graham Aeronautical Collection (Beinecke Rare Book and Manuscript Library) 717 United States National Aeronautics and Space Administration Scientific and Technical Information Branch 702 United States National Aeronautics and Space Administration. Scientific and Technical Information Office 685 George C. Marshall Space Flight Center 634 United States General Accounting Office 604 ebrary, Inc 546 Society of Photo-optical Instrumentation Engineers 522 Institute of Electrical and Electronics Engineers 511 SpringerLink (Online service) 495 American Astronautical Society 483 United States Civil Aeronautics Administration 403 United States National Aeronautics and Space Administration. Scientific and Technical Information Division 358 United States National Transportation Safety Board 331 SAE International Congress & Exposition 329 International Civil Aviation Organization 264 North Atlantic Treaty Organization Advisory Group for Aeronautical Research and Development 255 United States National Highway Traffic Safety Administration 254 Massachusetts Institute of Technology Flight Transportation Laboratory 247 North Atlantic Treaty Organization Advisory Group for Aerospace Research and Development. Fluid Dynamics Panel 225 North Atlantic Treaty Organization Advisory Group for Aerospace Research and Development. Structures and Materials Panel 220 Jet Propulsion Laboratory (U.S.) 219 see all ...

English 67,677 French 3,692 Russian 3,430 German 2,962 Italian 1,123 Chinese 762 Spanish 677 Japanese 358 Portuguese 256 Polish 214 Dutch 155 Czech 87 Indonesian 80 Hebrew 69 Swedish 64 Arabic 59 Korean 54 Romanian 50 Danish 41 Undetermined 40 Ukrainian 39 Multiple 37 Turkish 31 Malay 22 Finnish 19 Icelandic 18 Bulgarian 17 Lithuanian 17 Norwegian 16 Greek 15 see all ...

Congresses 7,946 Conference papers and proceedings 6,213 History 5,085 Biography 3,379 Electronic books 3,000 Periodicals 2,615 Technical reports 2,254 Biographies 1,933 Pictorial works 1,030 Handbooks, manuals, etc 844 Dictionaries 659 Juvenile literature 638 Handbooks and manuals 513 Statistics 478 Catalogs 474 Bibliography 288 Autobiographies 273 Directories 269 Juvenile works 254 Popular works 238 Exhibitions 225 Illustrated works 207 Early works to 1900 203 Tables 198 Government publications 183 Observations 174 Exhibition catalogs 156 Early works to 1800 135 Case studies 129 Anecdotes 127 see all ...

20th century 987 1900-1999 451 1867-1912 177 1871-1948 177 1934-1968 161 Early works to 1900 147 1902-1974 138 1939-1945 130 1873-1932 118 1897-1937 117 Early works to 1800 110 1857-1935 97 1900 - 1999 88 19th century 76 Geschichte 74 1911-2009 72 1914-1918 72 21st century 70 20e siècle 68 1907-1966 67 1740-1810 60 1745-1799 60 1838-1917 57 1912-1977 46 1900-1944 43 1863-1947 42 1904-1938 40 1889-1972 32 1898-1988 32 1930- 32 see all ...

United States 8,237 Soviet Union 1,422 Outer space 1,289 Germany 823 Great Britain 719 France 645 Russia (Federation) 535 Italy 493 China 470 Moon 423 California 385 Mars (Planet) 322 Europe 306 Japan 297 Canada 256 Russia 213 États-Unis 198 New York (State) 175 Australia 169 États-Unis 162 Poland 156 Brazil 144 India 140 England 128 Spain 90 New York 86 Alaska 78 Massachusetts 77 Indonesia 76 Illinois 73 see all ...