TY  - GEN
AU  - Krebs, J. R.
AU  - Davies, N. B.
TI  - An introduction to behavioral ecology
U1  - 591.51  
PY  - 1981///
CY  - Sundland : 
PB  - Sinauer Associates
KW  - Behavioral ecology
N1  - Includes biliographical references
ER  -