TY  - BOOK
AU  - Krebs, J. R.
AU  - Davies, N. B.
TI  - An introduction to be behavioural ecology,
U1  - 575.22 
PY  - 1981///, repr. 1985
CY  - Oxford
PB  - Blackwell
KW  - Evolution
KW  - Behavior evolution
ER  -