Nijkamp,Peter. <br/><br/>
Environmental policy analysis  operational methods and models 

 - U.S.A.  John Wiley & Sons Ltd.  1980 
 - xvi,283p. 
<br/><br/><label>ISBN: </label>0 471 27763 0 
<br/><br/><label>Dewey Class. No.: </label>620.8  / N61E