Emission reporting guidelines 

 - New York  United Nation U S A       2003 
 - 65p. Bib p. 65  cm. 
 - Air Pollution Studies, 15 .
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geography - Environment
<br/><br/><label>Dewey Class. No.: </label>U:(G:558), P3