Young, Edward Joseph  1907-1968 <br/><br/>
Petrography and origin of Xenotime and monazite concentrations Central City district Colorado / 
by E. J. Young and P. K. Sims. 
 -- Washington :   United States Government Printing Office,   1961 
 - P. 273-297. -- 
 (Geological Survey Bulletin  ;  1032-F).
<br/><br/><label>Subjects--Topical Terms: </label><br/>Colorado<br/>Depósitos de minerales<br/>Petrografía
<br/><br/><label>Universal Decimal Class. No.: </label>552/553(788)