TY  - BOOK
AU  - Straub, Peter
TI  - Koko
SN  - 0451162145
AV  - PS 3569 .St912 1989
PY  - 1989///
CY  - New York
PB  - Penguin Group
KW  - American sign language
KW  -  Animal communication Apes Human
KW  - Animal communication Sign language Patterson, Penny
ER  -