Setting environmental standards: guidelines for decision-making  edited by H.W. De Koning. 

 - Geneva  World Health Organization  1987 
 - vii, 98p., 23cm. 
<br/><br/><label>ISBN: </label>92-4-1542144. 
<br/><br/><label>Dewey Class. No.: </label>363.739,  / S30S