01045cam a22003011 4500 gs 56000106 DLC 20260227111404.0 770113s1954 mouabf b 000 0 eng c gs 56000106 (OCoLC)2676350 U.S. Geol. Survey. Libr. Mo OCoLC DLC premarc n-us-mo QE131 .A13 vol. 35 551.731 551.72* Heller, Robert L. (Robert Leo), 1919- Stratigraphy and paleontology of the Roubidoux formation of Missouri. Rolla, 1954. 118 p. plates, 2 fold. maps (in pocket) diagrs., tables. 26 cm. Missouri. Division of Geological Survey and Water Resources. [Reports] v. 35, 2d ser. Bibliography: p. 109-112. Geology, Stratigraphic Ordovician. Geology Ozark Mountains. Paleontology Ordovician. Paleontology Ozark Mountains. Roubidoux formation of Missouri. 29037 29037