International Council for Bird Preservation, 1985.ICBP technical publication no.4.Paper covers.ISBN: 0946888051.V.g./No Jacket.Proceedings of a workshop and symposium held at King's College, Cambridge in 1982.This book is packed with scientific data of continuing relevance to the problems of conserving avian habitats.Spine sl.sunned.318 pp. In English.1 kg.