%0 Journal Article %T Auditory enrichment for Lar gibbons Hylobates lar at London Zoo %A SHEPHERDSON, DAVID %A BEMMENT, NEIL %A CARMAN, MICK %A REYNOLDS, SARAH %J International Zoo Yearbook %V 28 %N 1 %@ 0074-9664 %D 1989-01-01 %I Wiley Subscription Services, Inc., A Wiley Company %~ DeepDyve