IUCN  twelfth technical meeting, Banff, Alberta, Canada, 12 to 15 September 1972 ; edited by Hugh F. I. Elliott 

 - Morges  International Union for Conservation of Nature and Natural Resources  1973 
 - 383p. 
 - IUCN publications new series; no.28 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Conservation of natural resources
<br/><br/><label>Dewey Class. No.: </label>333.7215 IUC