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Text 249 Report 231 Other/Unknown Material 100 Dataset 37 Article in Journal/Newspaper 34 Thesis 15 Doctoral or Postdoctoral Thesis 14 Book 10 Still Image 8 Journal/Newspaper 7 Other Non-Article Part of Journal/Newspaper 4 Bachelor Thesis 3 Book Part 3 Master Thesis 3 Conference Object 2 Moving Image (Video) 1 see all ...

Valverde Gómez, José Antonio, 1926-2003 227 Nafziger, George F. 16 Thomsen, Steffen 9 Walsh, Matthew J. 9 Universidad de La Sabana 8 Carlson, Daniel F. 7 Lara M. Kueppers 7 Magrath Trading Store 7 Tejsner, Pelle 7 Goldbogen, Jeremy A. 6 Matthew J. Germino 6 Calambokidis, John 5 Friedlaender, Ari S. 5 CBS News 4 Cristina Castanha 4 Hazen, Elliott L. 4 Ahui Peng 3 Andrew B. Moyes 3 Brynne E. Lazarus 3 Carin Ashjian 3 Daniel E. Winkler 3 González-Mora, Beatriz 3 Jane G. Smith 3 Julia A. Klein 3 Katharine N. Suding 3 Martini, Kim 3 Military Police Association, Inc 3 Sierro Sánchez, Francisco Javier 3 Yan Yang 3 ABC News 2 see all ...

Ecology 225 Ecología 223 Vertebrados 209 Vertebrates 209 Zoology 209 Zoología 209 Aves 208 Birds 207 Castilla y León (España) 200 Castilla y León (Spain) 196 España) 141 Valladolid (Spain : Province) 133 Valladolid (España : Provincia) 132 Spain) 123 Mamíferos 73 World War 73 1939-1945 72 Mammals 72 WWII 72 World War Two 64 Valladolid (España) 43 Anfibios 40 Valladolid (Spain) 40 Amphibians 39 Arctic regions 36 Reptiles 36 Laguna de Duero (Valladolid 30 Alimentación 29 Diet 29 1940-1945 28 see all ...

Universidad de Salamanca: Gredos (Gestión del Repositorio Documental de la Universidad de Salamanca) 254 Ike Skelton Combined Arms Research Library (CARL) Digital Library 219 North Dakota State University (NDSU): Digital Horizons 73 DataCite Metadata Store (German National Library of Science and Technology) 23 Unknown 17 University of Pretoria: UPSpace 11 MiCISAN Repositorio Institucional (Universidad Nacional Autónoma de México, UNAM - Centro de Investigaciones sobre América del Norte, CI/AN) 9 Georg-August-Universität Göttingen: GOEDOC 8 Repositorio Universidad de La Sabana 8 ESS-DIVE: Deep Insight for Earth Science Data (via DataONE) 7 University of Lethbridge Digitized Collections 7 Southern New Hampshire University: SNHU Academic Archive 6 Expeditio - Repositorio Institucional Universidad de Bogotá Jorge Tadeo Lozano (UTADEO) 5 TCU Digital Repository (Texas Christian University) 5 University of Oklahoma/Oklahoma State University: SHAREOK Repository 5 Arctic Data Center (via DataONE) 4 CDC Stacks (Centers for Disease Control and Prevention) 4 Zenodo 4 Memorial University of Newfoundland: Digital Archives Initiative (DAI) 3 Pepperdine University: Pepperdine Digital Collections 3 ScholarsArchive@OSU (Oregon State University) 3 Universidade Federal do Paraná (UFPR): Teses & Dissertações 3 University of Washington, Seattle: Digital Collections 3 Apollo - University of Cambridge Repository 2 Defense Technical Information Center: DTIC Technical Reports database 2 Hunter Library Digital Collections (Western Carolina University) 2 IOP Publishing 2 Research Workspace (via DataONE) 2 Università degli Studi di Ferrara: CINECA IRIS 2 Washington State University: WSU Libraries Digital Collections 2 see all ...

Arctic 108 Norway 89 Paloma 87 Gaviota 66 Parus 65 Golondrina 55 Canada 53 Halcón 44 Pacific 44 Avión 41 Molinero 37 Helgeland 35 Gavilán 33 Greenland 28 Devils Lake 27 Otis 23 Blanco 22 Rata 21 Ortega 20 Grand Forks 19 Indian 19 Esther 18 Mabel 18 Roja 18 Pequeñas 17 Alta 16 Adolph 14 Clifford 14 Homestead 14 Ida 14 see all ...

Spanish 268 English 254 unknown 205 German 30 Portuguese 3 Russian 2 Afrikaans 1 Chinese 1 Croatian 1 Latin 1 Slovenian 1 see all ...

Arctic 114 Vanellus vanellus 76 Actitis hypoleucos 59 Alauda arvensis 59 Andarríos chico 59 Common Sandpiper 58 Alaska 57 Eurasian Skylark 57 Gaviota reidora 47 Larus ridibundus 47 Black-headed Gull 46 Falco peregrinus 43 halcón peregrino 43 peregrine falcon 43 Iceland 39 Apus apus 35 Helgeland 35 Greenland 28 Ringed Plover 24 Tundra 22 Newfoundland 21 Circus cyaneus 19 Antarc* 18 Attu 16 Climate change 16 North Atlantic 16 Aquila chrysaetos 15 Varanger 15 golden eagle 15 águila real 15 see all ...