Hawksworth, David L . Biodiversity information: needs and options / edited by David L. Hawksworth and Stella Dextre Clarke. - UK : CAB International, Wallingford , 1997 - x, 194p : ISBN: 0-85199-183-1 Subjects--Topical Terms: Biological diversity conservation-Information resources-Congresses Dewey Class. No.: G / N7