TY  - BOOK
AU  - Pitelka,Frank A.
TI  - Speciation and ecologic distribution in american jays of the genus Aphelocoma
U1  - 598.15 
PY  - 1951///
CY  - Los Angeles
PB  - University of California Press
KW  - Aphelocoma
KW  - Ave
KW  - Comportamiento
KW  - Aves
ER  -