Ewing, Lewis J. <br/><br/>
Effects of thermal treatment of sludge on municipal wastewater treatment costs / 
by Lewis J. Ewing, Howard H. Almgren  and Russell L. Culp 
 - Washington, D.C. :  United States Government Printing Office,  1978 
 - ix, 107 p. :  ill. ;  28 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>wastewater<br/>Pollution
<br/><br/><label>Dewey Class. No.: </label>363.728