Campbell, B. M. (Bruce Morgan), 1953- Uncovering the hidden harvest : valuation methods for woodland and forest resources / edited by Bruce M. Campbell and Martin K. Luckert. - London: Earthscan Publications, 2001. - xii, 262 p. : ill. ; 24 cm. - People and plants conservation manuals . Includes bibliographical references ISBN: 1853838098 Subjects--Topical Terms: Forest products --Economic aspects. LC Class. No.: SD 393 UN 2001