Conserving and valuing ecosystem services and biodiversity : Economic,instituitional and social challenges / Edited by Ninan,K.N - Londo : Earthscan , c2009 - xxix,402p. : ill.: 24cm. It includes bibliographical references and indexes ISBN: 978 1 84971 173 9 Subjects--Personal Names: --Conservation Dewey Class. No.: 339.951 6 CON