Libro 180,364 Conference Proceeding 22,109 Government Document 19,573 Electrónico 8,945 Thesis 4,759 Revista 4,139 Seriadas 3,990 Unknown 1,012 Conxunto 160 Capítulo de libro 97 Manuscrito 74 Audio 63 Reference Material 62 Mapa 53 Fotografía 37 Artigo 5 Obxecto Físico 4 Partituras 1 Xornal 1 ver todos ...

Q - Science 190,569

United States National Bureau of Standards 7,802 SpringerLink (Online service) 3,758 National Institute of Standards and Technology (U.S.) 2,852 ebrary, Inc 2,161 Society of Photo-optical Instrumentation Engineers 2,133 ProQuest (Firm) 1,538 Massachusetts Institute of Technology Center for Theoretical Physics 1,330 United States Weather Bureau 1,011 World Scientific (Firm) 891 American Institute of Physics 888 World Meteorological Organization 769 Society of Photo-Optical Instrumentation Engineers 735 SPIE (Society) 726 United States Bureau of Standards 675 Massachusetts Institute of Technology Joint Program on the Science & Policy of Global Change 645 De Gruyter 634 North Atlantic Treaty Organization Scientific Affairs Division 626 Environmental Research Laboratories (U.S.) 618 Massachusetts Institute of Technology Plasma Fusion Center 583 National Climatic Data Center (U.S.) 551 Edgar Fahs Smith Memorial Collection (University of Pennsylvania) 518 United States National Oceanic and Atmospheric Administration 512 Massachusetts Institute of Technology Research Laboratory of Electronics 483 United States National Aeronautics and Space Administration 476 International Union of Pure and Applied Physics 449 National Climatic Center 448 Einstein, Albert, 1879-1955 439 Massachusetts Institute of Technology Plasma Science and Fusion Center 413 International Atomic Energy Agency 400 United States Environmental Data Service 400 ver todos ...

English 160,223 German 12,358 French 9,355 Russian 7,105 Italian 2,129 Chinese 1,780 Spanish 1,779 Latin 1,221 Japanese 1,057 Dutch 647 Polish 323 Portuguese 317 Arabic 309 Undetermined 309 Indonesian 259 Danish 207 Swedish 206 Multiple 190 Hebrew 170 Czech 164 Korean 155 Romanian 142 Ukrainian 107 Hungarian 104 Norwegian 99 Ancient Greek 96 Vietnamese 91 Greek 66 Thai 66 Turkish 60 ver todos ...

Congresses 26,622 Conference papers and proceedings 18,932 Electronic books 16,739 Technical reports 12,392 Periodicals 5,983 History 4,229 Biography 3,742 Early works to 1800 2,495 Biographies 2,466 Observations 2,069 Tables 1,857 Early works 1,746 Dictionaries 1,399 Textbooks 1,239 Handbooks, manuals, etc 1,143 Academic theses 1,065 Bibliography 1,001 Handbooks and manuals 954 Early works to 1850 948 Popular works 940 Problems, exercises, etc 905 Statistics 884 Electronic journals 759 Thèses et écrits académiques 719 Juvenile literature 699 Tables (Data) 673 Problems and exercises 646 Festschriften 641 Charts, diagrams, etc 621 Congrès 581 ver todos ...

1879-1955 1,332 20th century 830 Early works to 1800 808 1642-1727 509 Early works to 1850 492 1900-1999 421 19th century 305 1791-1867 180 18th century 175 1885-1962 174 17th century 164 1904-1967 144 1901-1976 106 1831-1879 104 21st century 97 1900 - 1999 96 1800-1899 92 1745-1827 87 1858-1947 82 1922- 82 1901-1954 76 Holocene 74 Quaternary 71 1564-1642 68 1871-1937 68 1887-1961 67 1942-2018 67 1957-1958 66 1918-1988 65 1600-1699 63 ver todos ...

United States 5,725 Germany 989 China 967 Great Britain 831 Soviet Union 669 India 591 Japan 529 Europe 471 France 459 Italy 457 Canada 368 England 333 Australia 298 Russia (Federation) 288 Arctic regions 281 Tropics 281 Antarctica 268 California 263 Indonesia 248 Africa 229 Austria 214 Mexico 194 Asia 189 Alaska 187 Norway 186 Pacific Ocean 182 Arctic Regions 166 Earth (Planet) 164 Developing countries 160 New York (State) 156 ver todos ...