The Birds of finca "La Selva", Costa Rica : a tropical wet forest locality.

by Slud, Paul 1919-2006
Published 1960

The birds of Hacienda Palo Verde, Guanacaste, Costa Rica. /

by Slud, Paul 1919-2006
Published 1980

The birds of Cocos Island, Costa Rica /

by Slud, Paul 1919-2006

The birds of Costa Rica.

by Slud, Paul 1919-2006

Geographic and climatic relationships of avifaunas with special reference to comparative distribution in the neotropics /

Published 1976