TY  - BOOK
AU  - Krebs,J.R;Davies,N.B;
TI  - An introduction to behevioural Ecology
SN  - 0632035463
U1  - 591.5KRE 1999. 
PY  - 1999///
CY  - USA.
PB  - Blackwell sciences.
KW  - Biology
N1  - includes reference and index
ER  -