Contributions to the natural history of the United States of America. Vol. 1, pp. 1-1i, (Part I) Essay on classification, PP. 3-232, (Part II) North American testudinata, pp. 233-450, Vol. 2 (Part III) Embryology of the turtle
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Contributions to the natural history of the United States of America. Vol. 1, pp. 1-1i, (Part I) Essay on classification, PP. 3-232, (Part II) North American testudinata, pp. 233-450, Vol. 2 (Part III) Embryology of the turtle