Van Winkle, Walton <br/><br/>
Quality of the surface waters of Washington 

 - Washington  Government Printing Office  1914 
 - 105 p. :   il., map. ;   23 cm. 
<br/><br/> Impreso 
<br/><br/><br/>Ingles 
<br/><br/><label>Subjects--Topical Terms: </label><br/>MINERIA