Southworth, Scott <br/><br/>
Geology of the Harpers Ferry Qudrangle, Virginia, Maryland and West Virginia. 

<br/><br/><label>Standard No.: </label>Bulletin 2123 
<br/><br/><label>Subjects--Index Terms: </label>GEOLOGIA 
<br/><br/><label>Universal Decimal Class. No.: </label>55