Autor
Cortázar, Ángela
15
The National Geographic Society
15
Acuña, Delia M. G. de
1
Babini, José
1
Calderón Contreras, Sergio Claudio
1
Corbera, Jordi
1
Edwards, Brian
1
Heller, H. Craig
1
Langley, Andrew
1
Mayer, Cassie
1
Mayes, Susan
1
Morgan, Sally
1
Orians, Gordon H.
1
Papp, Desiderio
1
Pringle, Mike
1
Puche, Carles
1
Purves, William K.
1
Sadava, David
1
Scorey, John
1
Sigmar
1
Trotter, Stuart
1