Dietrich, Richard V. <br/><br/>
Virginia minerals and rocks. 

 - Virginia :  Virginia Polytechnic Institute,  1954. 
 - 61 p. :  il. ;  23 cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mineralogía<br/>Minerales<br/>Roca
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Virginia
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Libro
<br/><br/><label>Universal Decimal Class. No.: </label>549:552(755)