Nawrocki, Michael A. <br/><br/>
A portable device for measuring wastewater flow sewers / 
by Michael A. Nawrocki 
 - Washington, D.C. :  U.S. Environmental Protection Agency,  1974 
 - vii, 53 p.  ill. ;  28 cm. 
 - Environmental protection technology series .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Diesel motor<br/>Electric generators
<br/><br/><label>Dewey Class. No.: </label>621.313