Stoddard, B.H. <br/><br/>
Mica in 1921. 

 - Washington, D.C.  Government Printing Office  1922 
 - pp. 77-82 
<br/><br/> Impreso 
<br/><br/><br/>Ingles 
<br/><br/><label>Subjects--Topical Terms: </label><br/>MINERIA