Pettyjohn, Wayne A. <br/><br/>
Water quality in a stressed environment 

 - Minneapolis :  Burgess,  1972 
 - 309 p.  : ilus. 
 - Readings in environmental hydrology .
 - Readings in environmental hydrology .
<br/><br/><label>LCCN: </label>49107 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agua--Contaminación.
<br/><br/><label>Dewey Class. No.: </label>614.77  / P4