Impacts of long-range transboundary air pollution 

 - New York  United Nation U S A       1992 
 - 86p.  cm. 
 - United Nations, Pollutation Air Studies, 8 .
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer Science
<br/><br/><label>Dewey Class. No.: </label>D854.1.N9, N2/UN