Evaluating the environment : application of cost-benefit analysis to environmental protection measures / edited by Yusuf J. Ahmad. - Nairobi : United Nations Environment Programme, 1981. - vii, 100 p. ; 21 cm. - UNEP studies ; v. 6 . Includes index. ISBN: 9280710443 Subjects--Topical Terms: Environmental policy -- Cost effectiveness. Environmental protection -- Cost effectiveness.