The State of transboundary air pollution :  1989 update : report prepared within the framework of the Convention on Long-range Transboundary Air Pollution / 
Economic Commission for Europe. 
 - New York :  United Nations,  1990. 
 - v, 86 p. :  ill., maps ;  30 cm. 
 - Air pollution studies,  6  1014-4625 ; .
<br/><br/> "ECE/ED.AIR/25."  "United Nations publication sales no. E.90.II.E.33"--T.p. verso. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>9211164893 
<br/><br/><label>LCCN: </label>92192919  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Air--Pollution.<br/>Transboundary pollution.<br/>Heavy metals--Environmental aspects.<br/>Trees--Effect of air pollution on--Europe.
<br/><br/><label>Dewey Class. No.: </label>363.73922  / STA.N0