Crisis :  readings in environmental issues and strategies 
ed. by Robert M. Irving ....  
 - London  Macmillan  1972.  
 - XVII, 354 S  graph. Darst. 
<br/><br/> Literaturangaben.  
<br/><br/><br/>Reprinted.  
<br/><br/><label>ISBN: </label>0770503675 (paper) 0770507808 (cloth) 9780770503673 (paper) 9780770507800 (cloth)