TY  - RPRT
TI  - Chimpanzee problem comprehension: insufficient evidence.
AU  - E S Savage-Rumbaugh
AU  - D M Rumbaugh
PY  - 1979
DO  - 10.1126/science.505009
UR  - https://pubmed.ncbi.nlm.nih.gov/505009/
ID  - 505009
ER  -