Conservation and development :  papers and proceedings : IUCN's 12th Technical Meeting, Banff, Alberta, Canada, 12 to 15 Sept. 1972 / 
edited by Hugh F.I. Elliott. 
 - Morges, Switzerland :  International Union for the Conservation of Nature and Natural Resources,  1973. 
 - IUCN Publications. New series ;  no. 28 .
 - International Union for Conservation of Nature and Natural Resources. Publications. New series ;  International Union for Conservation of Nature and Natural Resources. Publications. New series ;  International Union for Conservation of Nature and Natural Resources. Publications. New series ;  no. 28. .
<br/><br/> English and French. 
<br/><br/>Includes bibliographies. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Conservation of natural resources -- Congresses.--Conservation of natural resources -- Congresses.<br/>Environmental policy -- Congresses.--Environmental policy -- Congresses.