Varley, Thomas. <br/><br/>
The extraction of potash from low-grade alunite, 

 - [Salt Lake City]  Published by the University of Utah, State school of mines in cooperation with the United States Bureau of mines  [1920] 
 - 28, [3] p.  23 cm. 
<br/><br/> Cover-title. 
<br/><br/><label>LCCN: </label>gs 22000082  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Potash.<br/>Alunite.
<br/><br/><label>LC Class. No.: </label>TN919  / .V3