| Publication Type: |
Book |
| Year: |
1998 |
| Authors: |
David J. Shepherdson, Jill D. Mellen, Michael Hutchins |
| Journal: |
Zoo and aquarium biology and conservation series |
| Publisher: |
Smithsonian Institution Press |
| Keywords: |
animal culture, captive wild animals, congresses, environmental enrichment |
| ISBN: |
1560987456 (cloth alk. paper) |