The nature and value of biodiversity Author Raven P. Date 1992 Source IUCN (ID: MON-048837) Publisher | Place of publication WRI / IUCN / UNEP | Washington, DC, USA ISBN 0-915825-74-0 Pages 20 p. Document type Monography/book Language English Field of application International Subject Wild species & ecosystems Keyword Biodiversity Full text MON-048837.doc