@misc{indiciaea91663ee81f6,
  title = {Concept formation in chimpanzees.},
  author = {R T KELLEHER},
  year = {1958},
  doi = {10.1126/science.128.3327.777},
  url = {https://pubmed.ncbi.nlm.nih.gov/13592253/},
  note = {Source identifier: 13592253}
}