World resources 1992-93 :  a report by the world resources institute. 

 - New York :  Oxford University Press,  1992. 
 - xiv, 385 p. ;  28 cm. 
<br/><br/><label>ISBN: </label>0195062310 
<br/><br/><label>Dewey Class. No.: </label>333.7091 WOR-92-93