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Neuropsychologia|July 25, 2000
A comparative study of aimed throwing by monkeys and humansG C Westergaard, C Liv, M K Haynie, et al.Journal of Comparative Psychology (Washington, D.C. : 1983)|June 27, 1998
Why some capuchin monkeys (Cebus apella) use probing tools (and others do not)G C Westergaard, A L Lundquist, M K Haynie, et al.Pageof 1