Ball, O. M. (1931). A contribution to the paleobotany of the Eocene of Texas. Agricultural and Mechanical College of Texas.
Chicago Style (17th ed.) CitationBall, Oscar Melville. A Contribution to the Paleobotany of the Eocene of Texas. College Station: Agricultural and Mechanical College of Texas, 1931.
MLA (8th ed.) CitationBall, Oscar Melville. A Contribution to the Paleobotany of the Eocene of Texas. Agricultural and Mechanical College of Texas, 1931.
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