Author
SpringerLink (Online Service)
10
SpringerLink (Online service)
8
ScienceDirect (Online service)
4
Elliott, Andrew
3
Hoyo, Josep del
3
Sargatal, Jordi
3
Altay Scientific (Firm)
2
American Museum of Natural History
2
BirdLife International
2
Cabot, José
2
International Council for Bird Preservation
2
Participant Media,
2
United States. National Aeronautics and Space Administration
2
Winterhalder, Bruce
2
Abbott, Edwin Abbott, 1838-1926
1
Actual Films,
1
Adler, Mark,
1
Aguirre Bravo, Celedonio
1
Alaniz-Álvarez, Susana A., 1958-
1
American Association of Petroleum Geologists
1
Aparicio, Eduardo,
1
Armesto Zamudio, Juan J.,
1
Barbé, Olli
1
Barratier, Christophe
1
Bataller Torras, Alex,
1
Becceneri, José Carlos
1
Bell, Kristen, 1980-
1
Berge, Richard,
1
Bermudez, Alfredo
1
Biel, Andrew,
1
Bini, Joe,
1
Books of Discovery (Firm)
1
Boyle, Kazimir, 1976-
1
Branley, Franklyn M. 1915-2002
1
British Museum (Natural History)
1
Brookhaven National Laboratory
1
Bueno, Mariano
1
Burn, Hilary
1
Burnie, David
1
Burriel-Martí, F.
1
Cabrera Carrillo, Juan Antonio,
1
Calero, Julián Simón
1
California Academy of Sciences
1
Camaño, Andrés,
1
Campos Velho, Haroldo Fraga de
1
Camí, Jordi, 1952-
1
Caplan, Seth,
1
Cassan, A.
1
Castilla Z., Juan Carlos,
1
Castro, Sergio
1
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