TY  - BOOK
AU  - Tinbergen,Niko
AU  - Medawar, Peter 
TI  - The animal in its world: explorations of an ethologist, 1932-1972 
T2  - A Harvard paperback
SN  - 0045910154
U1  - 591.5 23
PY  - 1973///
CY  - London
PB  - George Allen & Unwin
KW  - Animal behavior
N1  - Includes papers translated from the German; Includes bibliographies; v. 1. Field studies.--v. 2. Laboratory experiments and general papers
ER  -