The crawfishes of the state of Pennsylvania Ortmann, Arnold E. 1863-1927 creator text book Pittsburgh Published by the authority of the Board of Trustees of the Carnegie Institute [1906] 1906
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ENG "A continuation of, and an enlargement upon 'The crawfishes of western Pennsylvania' published in the annals of the Carnegie Museum, vol.3, 1905, p. 30 et seq."--cf. p. 343. Crustacea Pennsylvania AS36 .P75 vol.2, no.10 Memoirs of the Carnegie Museum, v. 2, no. 10 https://www.biodiversitylibrary.org/bibliography/42938 10.5962/bhl.title.42938 UU