An ecological study on proboscis monkeys in Sarawak by Anthony Conrad Sebastian..

by Sebastian, A.C.
Published 1987

Surveying orang-utan populations by counting nests from a helicopter : a pilot survey in Sabah report compiled by Junaidi Payne..

Published 1986

Survey and collection of wild and cultivated citrus of Sabah submitted on 31st January 1985 by David T. Jones..

by Jones, D.T.
Published 1985