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Controllability in environmental enrichment for captive chimpanzees (Pan troglodytes)

Elaine N Videan1, Jo Fritz, Melanie L Schwandt

  • 1Primate Foundation of Arizona, Mesa, Arizona 85277, USA. evpfa@qwest.net

Journal of Applied Animal Welfare Science : JAAWS
|November 10, 2005
PubMed

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