TY  - BOOK
AU  - Perrins,Christopher M.
AU  - Birkhead,Tim
TI  - Avian ecology
T2  - Tertiary level biology
SN  - 9780216914773
U1  - 598.25 
PY  - 1983///
CY  - London
PB  - Chapman and Hall
KW  - Birds -- Ecology
KW  - Oiseaux -- Ecologie
KW  - Vogel
ER  -