HARBOUR, R. L. <br/><br/>
Coal resources of Trinidad-Aguilar area Las Animas and Huerfano counties, Colorado / 
by R. L. Harbour and G. H. Dixon. 
 -- Washington :   United States Government Printing Office,   1959 
 - P. 446-488 + map. -- 
 (Geological Survey Bulletin  ;  1072-G).
<br/><br/><label>Subjects--Topical Terms: </label><br/>Colorado<br/>Geología
<br/><br/><label>Universal Decimal Class. No.: </label>55(788)