Kopp Raymond J Valuing natural assets - Washington Resources for the future 1993 - xix,358p cm. Bibliography chapterwise; Glossary: P 337-42 ISBN: 0915707675 Pd 24.00 Source: 66862, 26/04/2001, IBD General Book Subjects--Topical Terms: Natural Resources Economics Dewey Class. No.: X:271:(B).73.N9, N3