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The middle Triassic marine invertebrate faunas of North America,

By Smith, James Perrin,.
Washington, Govt. Print. Off., 1914 .
254 p. , Issued also as House Doc. 587, 63d Cong., 2d sess. | Plates printed on both sides of leaves. | Includes index. 30 cm..

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Upper Triassic marine invertebrate faunas of North America /

By Smith, James Perrin,.
Washington : U.S. Gov't. Print. Off., 1927 .
iv, 262 p. : , At head of title: Department of the Interior. 29 cm..

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