Managing the Environment :  An analyticaol Examination of Problems and Procarlures / 
edited by Yusuf J. Ahmad. 
 - Nairobi :  United Nations Environment Programme ,  1983 
 - 100 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental policy--Cost effectiveness.<br/>Chính sách môi trường--Quản lý--Hiệu quả chi phí<br/>Environmental engineering
<br/><br/><label>Dewey Class. No.: </label>363.7/0525/0681‰219  / MAG 1983