Can chimpanzees (Pan troglodytes) discriminate appearance from reality?

@article{Krachun2009CanC,
  title={Can chimpanzees (Pan troglodytes) discriminate appearance from reality?},
  author={Carla Krachun and Josep Call and Michael Tomasello},
  journal={Cognition},
  year={2009},
  volume={112},
  pages={435-450}
}

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