The Permo-Carboniferous orogeny in the south-central United States Waterschoot van der Gracht, W. A. J. M. van (Willem Anton Joseph Maria) 1873-1943 creator text bibliography ne Amsterdam Noord-Hollandsche Uitg. Mij. 1931 monographic eng
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170 p., [12] leaves of plates (some folded) : ill., maps ; 27 cm. by W.A.J.M. van Waterschoot van der Gracht. Part of illustrative matter folded in pocket. Presented at the meeting of the Royal Academy of Sciences in Amsterdam in Feb. 1930. Also read before the American Association of Petroleum Geologists at the New Orleans meeting in Mar. 1930. Includes index. Bibliography: p. [157]-162. Mountains United States Ouachita Mountains (Ark. and Okla.) Wichita Mountains (Okla.) Geology, Stratigraphic Carboniferous Q57 .A533 deel 27, no. 3 551.43 Verhandelingen der Koninklijke Akademie van Wetenschappen te Amsterdam, Afdeeling Natuurkunde. Tweede sectie ; d. 27 no. 3 gs 32000012 U.S. Geol. Survey Libr. 790517 20260227111336.0 gs 32000012