Waage, Karl M.  1915-1999 <br/><br/>
Stratigraphy and refractory clayrocks of the Dakota group along the Northern front range, Colorado / 
by Karl M. Waagé. 
 -- Washington :   United States Government Printing Office Office,   1961 
 - 154 p. + map. 
 (Geological Survey Bulletin  ; 1102).
<br/><br/><label>Subjects--Topical Terms: </label><br/>Colorado<br/>Cretácico<br/>Estratigrafía
<br/><br/><label>Universal Decimal Class. No.: </label>551.763(788)