TY  - BOOK
AU  - Kohler, Wolfgang
AU  - Winter, Ella
TI  - Mentality of apes 
U1  - 599.8 
PY  - 1956///
CY  - N. Y.
PB  - Random House
KW  - Apes
KW  - Animal Intelligence
KW  - Chimpanzees
ER  -