Mangan, John William. <br/><br/>
The use of water in Pennsylvania, 1951, 
by John W. Mangan and Jack B. Graham. 
 - Washington,  1953. 
 - 11 p.  map, diagrs., tables  27 cm. 
 - Geological Survey circular,  257 .
<br/><br/> Based on data collected in cooperation with the Pennsylvania Departments of Internal Affairs and Forests and Waters. 
<br/><br/><label>LCCN: </label>gs 53000218  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water-supply--Pennsylvania.
<br/><br/><label>LC Class. No.: </label>QE75  / .C5 no. 257