Stratification in water quality in inundated anthracite mines, eastern Pennsylvania 
by K.J. Ladwig ... [et al.] 
 - [Avondale, MD]  U.S. Dept. of the Interior, Bureau of Mines  1983 
 - ii, 35 p.  ill.  28 cm. 
 - Report of investigations  8837 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Abandoned coal mines--Environmental aspects--Pennsylvania<br/>Anthracite coal--Pennsylvania<br/>Mine water--Testing<br/>Water quality--Measurement
<br/><br/><label>Dewey Class. No.: </label>622 s