00950cam a22002531  4500001001300000003000400013005001700017008004100034010001700075035001900092040004100111042001200152050002000164100003500184245013300219260005800352300004900410490004500459500006200504504003500566504003200601650002300633650004000656gs 21000130 DLC20260227111325.0790212s1920    couab    b   s000 0 eng c  ags 21000130   a(OCoLC)4645682  aU.S. Geol. survey LibrarycMiDWdDLC  apremarc00aQE91b.A4 no.191 aHenderson, Junius,d1865-1937.14aThe cretaceous formations of northeastern Colorado and the foothills formations of north-central Colorado,cby Junius Henderson.  aDenver, Col.,bEames brothers, state printers,c1920.  a98 p.billus., fold. map (in pocket)c23 cm.0 aColorado. Geological survey. Bulletin 19  aAt head of title: Colorado Geological survey, Boulder ...  aBibliography: p. 53-57, 94-96.  aBibliographical foot-notes. 0aGeologyzColorado. 0aGeology, StratigraphicyCretaceous.