TY  - RPRT
TI  - Cognitive development in object manipulation by infant chimpanzees.
AU  - Misato Hayashi
AU  - Tetsuro Matsuzawa
PY  - 2003
DO  - 10.1007/s10071-003-0185-8
UR  - https://pubmed.ncbi.nlm.nih.gov/12905079/
ID  - 12905079
ER  -