TY  - BOOK
AU  - Proceedings of an international symposium on behaviour and environment(1968
AU  - Esser, Aristide H., ed.
TI  - Behavior and environment: The use of space by animals and men:Proceedings
SN  - 306305216
U1  - 150.1943 
PY  - 1971///
CY  - New York
PB  - Plenum Press
ER  -