For the conservation of earth / 
Vance Martin, editor. 
 - Golden, Colo. :  Fulcrum, Inc.,  c1988. 
 - iii, 418 p. :  ill. ;  22 cm. 
<br/><br/> "Proceedings of the 4th World Wilderness Congress, held in Denver and Estes Park, Colorado"--Cover. 
<br/><br/>Includes bibliographies. 
<br/><br/><label>ISBN: </label>1555910262 :  $15.95 
<br/><br/><label>LCCN: </label>88016319 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Nature conservation--Congresses.<br/>Natural areas--Congresses.<br/>Wilderness areas--Congresses.
<br/><br/><label>LC Class. No.: </label>QH75.A1  / W67 1987 
<br/><br/><label>Dewey Class. No.: </label>333.78/2