Natural Environments :  Studies in theoretical and applied analysis / 
John V.Krutilla . 
 - Massachusetts :  The Johns Hopkins University press,   1972.  
 - viii, 352 p. :  
<br/><br/> Includes index.   Includes index.  
<br/><br/><label>ISBN: </label>801814464 
<br/><br/><label>Subjects--Topical Terms: </label><br/>_Natural environments 
<br/><br/><label>LC Class. No.: </label>QH76  /  .N28 1972