. The crawfishes of the state of Pennsylvania. Crayfish; Crustacea -- Pennsylvania. . 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 Ortmann, A. E. (Arnold Edward), 1863-1927. [Pittsburgh, Carnegie Institute

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Keywords: ., bookcentury1900, bookdecade1900, bookpublisherpitts, bookyear1906