Welch, Robin I. <br/><br/>
Aerial spill preservation surveillance during sub-optimum wather / 1973 
by Robin I. Welch and Allan D. Marmelstein and Paul M. Maughan 
 - Washington, D.C. :  United States Environmental Protection Agency,  1973 
 - vii, 55 p. :  ill. ;  29 cm. 
 - Environmental protection technology series .
<br/><br/> EPA-R2-73-243 
<br/><br/>Includes bibliographical references 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Aeration<br/>Pollution
<br/><br/><label>Dewey Class. No.: </label>625.35