Butler, G. M.  1881- <br/><br/>
Uranium and radium,  by G. M. Butler and M. A. Allen. 

 - Tucson, Ariz.,  Pub. by the University, Arizona Bureau of Mines,  1921. 
 - 26 p. 
 - Arizona. Bureau of Mines. Bulletin  no. 117. Mineral technology series no. 27 .
 - University of Arizona.  State Bureau of Mines.  Bulletin ;  117. .
<br/><br/> Cover title.  Dated December 1, 1921, but includes material for 1922.  At head of title: University of Arizona bulletin. 
<br/><br/>Bibliography: p. 25-26. 
<br/><br/><label>LCCN: </label>gs 22000385  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Uranium.<br/>Radium.
<br/><br/><label>LC Class. No.: </label>TN948.R3  / B7 
<br/><br/><label>Gov. Doc. Class. No.: </label>MN 1.3:B 85/117