Lauch, Richard P. <br/><br/>
Application and procurement of automatic wastewater samplers / 
by Richard P. Lauch 
 - Washington, D.C. :  U.S. Environmental Protection Agency,  1975 
 - vi, 24 p. ;  27 cm. 
 - Environmental monitoring series .
<br/><br/> April 1975 
<br/><br/><label>Subjects--Topical Terms: </label><br/>wastewater
<br/><br/><label>Dewey Class. No.: </label>363.7284