Wyrick, Graville G. <br/><br/>
Hydrologic effects of stress relief tracturing in an appalachian valley / 
by Graville G. Wyrick and James W. Borchers 
 - Washington, D. C. :  United States Government Printing Office,  1981 
 - viii, 51 p. ;  28 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Hydrology--United States<br/>Watersheds--United States
<br/><br/><label>Dewey Class. No.: </label>551.480973