TY  - BOOK
AU  - Krebs, J.R
AU  - Davies, N.B
TI  - Introduction to behavioural ecology /J.R. Krebs, N.B. Davies
SN  - 0632035463
U1  - 591.51 
PY  - 1993///
CY  - Oxford
PB  - Blackwell
ER  -