Hershaft, A. <br/><br/>
Critical review of estimating benefits of air and water pollution control / 
by A. Hershaft 
 - Washington, D.C. :  U.S. of Environmental Protection Agency,  [n.d.] 
 - Various pagings ;  26 cm. 
<br/><br/> Contrast 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water--Purification<br/>Sewage--Purification
<br/><br/><label>Dewey Class. No.: </label>628.1