Environmental policy / 
[edited by] George S. Tolley 
 - Cambridge, Mass. :  Ballinger Publishing,  1981- 
 - v. :  ill. ;  24 cm. 
<br/><br/> Includes index and bibliographical references 
<br/><br/> Elements of environmental analysis -  Air quality  volume I.  volume II. 
<br/><br/><label>ISBN: </label>088410625X (v. 1) 0884106268 (v. 2) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental policy<br/>Environmental protection