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Animal Welfare Institute8y
Space Utilization by Captive-born Baboons (Papio sp.) Before and After Provision of Structural Enrichment
Zoo Biology 5: 293-300 Brent L, Lee D R and Eichberg J W 1991 Evaluation of a chimpanzee enrichment enclosure. Journal of Medical Primatology 20: 29-34 Brent L and Long K E 1995 The behavioral ...