. A catalogue of the Cretaceous and Tertiary plants of North America [microform]. Paleobotany; Paleobotany; Paléobotanique; Paléobotanique. . Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Knowlton, Frank Hall, 1860-1926; United States. Geological Survey. Washington : G. P. O.

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Keywords: ., book, bookcentury1800, bookdecade1890, bookpublisherwashingtongpo