Effects and control of long range transboundary ai 

 - New York  United Nations U S A       1995 
 - 72p.  cm. 
 - United Nations, Air Pollution Studies, 11 .
<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, N5/UN