I.: MacKinnon, John: Field Guide to the Birds of Java and Bali. Yogyakarta, Gadjah Mada Univ. Press 1990. Pbk. ISBN 9794200921 / II.: Holmes, Derek: The Birds of Sumatra and Kalimantan. Oxford, Oxford Univ. Press 1990. Hardback. ISBN 0195889711 / III.: Mason, Victor; Jarvis, Frank: Birds of Bali. Singapore, Periplus Editions 1989. Hardback. ISBN 0945971044 / IV.: Holmes, Derek; Nash, Stephen: The Birds of Java and Bali. Oxford, Oxford Univ. Press 1991. Hardback. ISBN 0195889274. Books in pristine condition.