TY  - RPRT
TI  - Tool use and tool making in wild chimpanzees.
AU  - C Boesch
AU  - H Boesch
PY  - 1990
DO  - 10.1159/000156428
UR  - https://pubmed.ncbi.nlm.nih.gov/2157651/
ID  - 2157651
ER  -