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Autor:
Diana Sumner, Stephanie Obradovich, Kristine DeMorris, Latrece Cotton, Lisa Lofton, Todd Foster, G. Mitchell, Jonathan Minor
Publikováno v:
Zoo Biology. 9:55-63
Research on the effects of enrichment would do well to consider carefully location and/or visitor habituation effects on animal behavior. In the present series of studies, 19,847 visitors to the Sacramento Zoo were counted and categorized by age and