TY  - RPRT
TI  - Chimpanzee problem-solving: a test for comprehension.
AU  - D Premack
AU  - G Woodruff
PY  - 1978
DO  - 10.1126/science.705342
UR  - https://pubmed.ncbi.nlm.nih.gov/705342/
ID  - 705342
ER  -