Man and his ecosystem :  proceedings of the 8th world clean air c ongress / 
edited by L.J.Brasser,W.C.Mulder sponsored by the international 248 by the international union of air pollution prevention associations host association, society for clean air in the netherlands. 
 - Amsterdam :  Elsevier Science,  1989. 
 - 5 v. :  ill. ;  25 cm. 
<br/><br/> english and french 
<br/><br/>Includes bibliographical references 
<br/><br/><label>ISBN: </label>874674 set 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental policy--Congresses.