TY  - BOOK
AU  - Krebs, J. R.
AU  - Davies, N. B.
TI  - Behavioural ecology: an evolutionary approach 
SN  - 0865427313
U1  - 591.51 20
PY  - 1997///
CY  - Cambridge, Mass.
PB  - Blackwell Science
KW  - Animal ecology
KW  - Animal behavior
KW  - Evolution
N1  - Includes bibliographical references (p. 396-445) and index
ER  -