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Author  |
Title | Year | Publication | Serial | Volume | Pages |
|---|---|---|---|---|---|---|
| Melis, A.P.; Warneken, F.; Jensen, K.; Schneider, A.-C.; Call, J.; Tomasello, M. | Chimpanzees help conspecifics obtain food and non-food items | 2011 | Proceedings of the Royal Society B: Biological Sciences | 5630 | 278 | 1405-1413 |