Environmental protection agency :  102 monitor 

 - Washington, D.C. :  United States Government Printing Office,  1979 
 - 85 p. ;  25 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental aspect<br/>Protection Agency--Environment
<br/><br/><label>Dewey Class. No.: </label>363.7