Vig , Norman J. <br/><br/>
Paperback	Environmental policy : new directions for the twenty-first century  	 
Norman J. Vig and Michael E. Kraft 
 - Tenth edition 
 - Thousand Oaks, California :   Sage,   c2019. 
 - xvi, 435 pages ;  23 cm. 
<br/><br/>Includes appendices, bibliographical references and index.<br/>