TY  - BOOK
AU  - Shepherdson,David J.
AU  - Mellen,Jill D.
AU  - Hutchins,Michael
ED  - 
TI  - Second nature :environmental enrichment for captive animals / (Acc: 3523)
SN  - 1560987456 (cloth : alk. paper)
U1  - 636.088/9 SHE 21
PY  - 1998///
CY  - Washington
PB  - Smithsonian Institution Press
KW  - Captive wild animals
KW  - Environmental enrichment (Animal culture)
KW  - Behavior, Animal
KW  - Animals, Zoo
KW  - Animal Husbandry
ER  -