Massachusetts Institute of Technology Laboratory for Computer Science 172 Dartmouth College Department of Chemistry 133 Dartmouth College Department of Physics and Astronomy 118 Edgar Fahs Smith Memorial Collection (University of Pennsylvania) 117 Royal College of Physicians of London 103 Dartmouth Medical School Department of Biochemistry 97 History of Medicine Collection (David M. Rubenstein Rare Book & Manuscript Library) 86 University of Chicago Digital Preservation Collection 86 Deutsche Geodätische Kommission 83 Massachusetts Institute of Technology Artificial Intelligence Laboratory 79 Dartmouth College Department of Biological Sciences 78 Linné, Carl von, 1707-1778 74 Harvard University Graduate School of Education 51 Princeton University Department of Mathematics 51 Dartmouth Medical School Department of Pharmacology and Toxicology 41 Massachusetts Institute of Technology Plasma Fusion Center 41 Dartmouth Medical School Department of Microbiology and Immunology 39 Dartmouth Medical School Department of Physiology 37 Stanford Linear Accelerator Center 37 Harvard University Department of Anthropology 34 Dartmouth College Department of Earth Sciences 31 ebrary, Inc 31 History of Science Collection (Brown University) 29 David E. Pingree Collection (Brown University) 27 Fiske Icelandic Collection 27 Linné, Carl von, 1707-1778 25 Thayer School of Engineering 25 Deutsche Geodätische Kommission 23 Fries, Elias, 1794-1878 22 Princeton University Program in Plasma Physics 20 see all ...

English 24,911 German 7,199 French 2,919 Latin 1,226 Dutch 1,038 Danish 393 Swedish 347 Spanish 179 Russian 66 Portuguese 49 Undetermined 30 Arabic 29 Chinese 26 Finnish 26 Italian 21 Polish 19 Hebrew 16 Croatian 12 Indonesian 10 Norwegian 10 Ancient Greek 9 Greek 8 Japanese 8 Korean 8 Sanskrit 7 Turkish 6 Central Khmer 5 Romanian 5 Catalan 3 Hindi 3 see all ...

Academic theses 8,452 Thèses et écrits académiques 6,361 Academic Dissertation 3,400 dissertations 2,979 doctoral dissertations 2,857 theses 2,857 masters theses 2,855 Hochschulschrift 594 Early works to 1800 414 Technical reports 335 Early works 312 Academic dissertations 295 History 286 Electronic books 285 Classification 215 Observations 172 Biography 82 Dissertations (form) 70 Biographies 55 Facsimiles 53 Thèses et écrits académiques 47 Dissertations 37 Terminology 30 Catalogs 29 Tables 27 Early works to 1850 25 Bibliography 24 Pre-Linnean works 24 Theses 22 Identification 17 see all ...

Early works to 1800 128 Cretaceous 122 Quaternary 80 Pleistocene 65 Tertiary 64 Jurassic 63 19th century 62 Devonian 59 18th century 53 Paleozoic 52 Miocene 49 Carboniferous 47 Precambrian 43 Triassic 42 Ordovician 41 From 65 to 140 million years ago 40 20th century 35 From 2 to 65 million years ago 35 From 140 to 190 million years ago 34 Permian 34 Eocene 32 From 345 to 405 million years ago 32 From 10 thousand to 2 million years ago 30 From 2 million years ago 30 Silurian 30 Oligocene 29 Cenozoic 28 Holocene 27 17th century 26 Cambrian 26 see all ...

Germany 2,076 France 779 Switzerland 471 Sweden 445 Paris 428 Göttingen 353 Illinois 325 Netherlands 280 Berlin 206 Chicago 196 United States 193 Leipzig 155 Zürich 152 California 151 Jena 141 Marburg 139 Pennsylvania 136 Uppsala 136 Halle 134 Giessen 117 New York (State) 106 Spain 92 Mexico 91 Michigan 88 Bern 84 Poland 84 North America 83 New York 80 Denmark 77 Europe 77 see all ...