The cretaceous formations of northeastern Colorado and the foothills formations of north-central Colorado Henderson, Junius 1865-1937 creator text bibliography cou Denver, Col Eames brothers, state printers 1920 monographic eng
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98 p. illus., fold. map (in pocket) 23 cm. by Junius Henderson. At head of title: Colorado Geological survey, Boulder ... Bibliography: p. 53-57, 94-96. Bibliographical foot-notes. Geology Colorado Geology, Stratigraphic Cretaceous QE91 .A4 no.19 Colorado. Geological survey. Bulletin 19 gs 21000130 U.S. Geol. survey Library 790212 20260227111325.0 gs 21000130