TY  - BOOK
AU  - Hinde,Robert A.
AU  - Thorpe,W.H.
TI  - Bird vocalizations: their relations to current problems in biology and psychology 
SN  - 0521074096
PY  - 1969///
CY  - London
PB  - Cambridge University Press
KW  - Bird
KW  - song
KW  - Addresses, essays, lectures
KW  - Birds
KW  - Behaviour
ER  -