Cross, Ralph H. <br/><br/>
A small vacuum oil skimming system / 
Ralph H. Cross 
 - Washington :  United States Government Printing Office,  1973 
 - vi, 19 p. :  ill.,  29 cm. 
 - Environmental protection technology series .
<br/><br/> EPA-R2-73-115 
<br/><br/>Includes bibliographical references 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Vacuum cleaner<br/>Pollution
<br/><br/><label>Dewey Class. No.: </label>621.55