Analysing the options : cost-benefit analysis in differing economic systems / edited by Yusuf J. Ahmad. - Nairobi : United Nations Environment Programme, 1982. - viii, 151 p. : ill. ; 21 cm. - UNEP studies ; v. 5 . Includes bibliographical references and index. ISBN: 9280710435 Subjects--Topical Terms: Environmental policy--Cost effectiveness.Environmental protection--Cost effectiveness. LC Class. No.: HC79.E5 / A492 1982 Dewey Class. No.: 363.7