TY  - BOOK
AU  - Krebs, J. R
AU  - Davies, N. B
TI  - Behavioural ecology: an evolutionary approach 
SN  - 0632009985 (pbk) 
PY  - 1984///
CY  - Oxford
PB  - Blackwell Scientific
KW  - Animal behavior
KW  - Animal ecology
KW  - Evolution
N1  - Includes index; Includes bibliographical references
ER  -