Krebs, J. R. Davies, N. B. An introduction to behavioral ecology J. R. Krebs , N. B. Davies - Blackwell Oxford 1981 c1981 - x , 292 p. : ill. , charts ; 24 cm. Bibliography : p. 265-278 ISBN: 0632006668 Subjects--Topical Terms: Evolution--QH LC Class. No.: QH366.2.K74