Young, Robert J. 1966- Environmental enrichment for captive animals / Robert J. Young - Oxford, UK : Blackwell Science, 2003 - xii, 228 p. : ill. ; 25 cm. - UFAW animal welfare series . Includes bibliographical references (p. 184-219) and index ISBN: 0632064072 RM204.33 Subjects--Topical Terms: Environmental enrichment (Animal culture)Animal welfareCaptive wild animalsDomestic animals