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Author (up) Title Year Publication Serial Volume Pages
Sugiyama Y Tool use by wild chimpanzees 1994 Nature 3041 376 327
Sugiyama Y; Koman J; Bhoye Show M Ant-catching wands of wild chimpanzees at Bossou, Guinea 1988 Folia Primatol. 3042 51 56
Yamakoshi G; Sugiyama Y Pestle-pounding behavior of wild chimpanzees at Bossou, Guinea: a newly observed tool-using behavior 1995 Primates 3052 36 489