Maps. Wyoming. tratigraphic sections and thickness maps of Lower Cretaceous and nonmarine Jurassic rocks of central Wyoming, oil and gas investigations, preliminary chart 13 [with test]; prepared by J. D. Love, Raymond M. Thompson, Chester O. Johnson, H. H. R. Sharkey, Harry A. Tourtelot and A. D. Zapp, assisted by Helen Lane Nace. n. p.

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