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1.
Notes on the biology of some of our North American species of May-flies. [By] Helen E. Murphy. by Series: Bulletin of the Lloyd Library of Botany, Natural History, Pharmacy and Materia Medica ; no. 22. Entomological series, no. 2
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: [Cincinnati, 1922]
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2.
Burrowing mayflies of our larger lakes and streams. By James G. Needham ... by Series: United States. Bureau of fisheries ; Doc. 883
Material type: Text Text; Format: print ; Literary form: Not fiction
Publication details: Washington, Govt. Print. Off., 1920
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