Development of air quality standard  

 - California:   Environmental Resources Inc,   1970 
 - 220p. 
<br/><br/><label>ISBN: </label>0-675-09277-9 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environment
<br/><br/><label>Subjects--Index Terms: </label>Air quality  
<br/><br/><label>Universal Decimal Class. No.: </label>641.712(082.2)  / L0