1979 convention on long range transboundary air po 

 - New York   UN           1996 
 - 79p  cm. 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pollution
<br/><br/><label>Dewey Class. No.: </label>D854.1.N9, N6/UN