Muilenburg, G. A.  1889- <br/><br/>
Manganese deposits of Colorado, 
by G. A. Muilenburg. 
 - Denver, Colo.,  Eames brothers, state printers,  1919. 
 - 3 p. l., 76 p.  23 cm. 
<br/><br/>"Bibliography on the occurrence, geology, and mining of manganese, with some references on its metallurgy and uses, comp. by Harold L. Wheeler": p. 54-69. 
<br/><br/><label>LCCN: </label>gs 19000332  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Manganese ores--Colorado.
<br/><br/><label>LC Class. No.: </label>QE91  / .A4 no. 15