TY  - RPRT
TI  - Do chimpanzees recognize photographs as representations of objects?
AU  - E Winner
AU  - G Ettlinger
PY  - 1979
DO  - 10.1016/0028-3932(79)90087-3
UR  - https://pubmed.ncbi.nlm.nih.gov/514478/
ID  - 514478
ER  -