TY  - BOOK
AU  - Catchpole, C.K
AU  - Slater, P. J. B.
TI  - Bird song
SN  - 9780521872423
U1  - 598 CAT/B 
PY  - 2008///
CY  - UK
PB  - Cambridge University Press
KW  - BIRDS
KW  - BIRD SONG
KW  - BIOLOGICAL THEMES
KW  - BIOLOGICAL VARIATIONS
KW  - ORNITHOLOGY
ER  -