Dixon, John A. <br/><br/>
Economics of protected areas :   a new look at benefits and costs /  
John A. Dixon, Paul B. Sherman 
 - London :   Earthscan,   1991, c1990. 
<br/><br/><label>ISBN: </label>9781853830976 
<br/><br/><label>Dewey Class. No.: </label>333.72091724  / DIX