Bustards
1984
Osborne, Patrick E. |
Birds
The wattled crane : a conservation priority
1984
Johnson, D. N. |
Puffins
1953
Lockley, R. M. |
Waterfowl tomorrow
1964
Linduska, Joseph L. |
Ecology of birds : an Australian perspective
1989
Ford, H. A. (Hugh A.) |
Aves del Parque Nacional Natural los Katíos, Antioquia, Choco, Colombia
1982
Rodríguez, José Vicente |
Salvemos las aves
1987
Schreiber, Rudolf |
A coloured key to the wildfowl of the world
1961
Scott, Peter |
Aves y plantas de Lanzarote en peligro de extinción
1991
Sosa, Kunkel |
Sosa, Cardona |
Birds of prey
1964
Sokotowski, Jan |