Infoterra:   World directory of environmental expertise  
/ United Nations Environment Programme 
 - Nairobi:   United Nations Environment Programme,   1987 
 - 663p. 
<br/><br/><label>ISBN: </label>9280711520 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science
<br/><br/><label>Universal Decimal Class. No.: </label>R 061.62:574](058)   / M7