TY  - BOOK
AU  - Hediger,Heini
TI  - Man and animal in the zoo: zoo biology
U1  - 636.08 
PY  - 1970///
CY  - London
PB  - Routledge & K. Paul
KW  - Zoo animals
KW  - Zoos
N1  - Originally published as Mensch und Tier im Zoo. Zurich, Albert Muller, 1965
ER  -