Statistics of air quality    Some methods 

 - New  York United Nation U S A    1984 
 - 49p.  cm. 
 - "UN, Conference Of European Statisticians, Economic Commission For Europe" .
<br/><br/><label>Standard No.: </label>115069 
<br/><br/><label>Source: </label> Reference Collections 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer Science
<br/><br/><label>Dewey Class. No.: </label>"D854:(B28), M4/UN"