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For Insects, Spiders & Their Kin
For the United States & Canada
Taxonomy and ecology of Stenonema mayflies (Heptageniidae: Ephemeroptera)
By Lewis, P.A.
Environmental Monitoring Series. Cincinatti, OH, EPA, 1974
Cite: 747646 with citation markup [cite:747646]
Available at Ephemeroptera-Galactica as a PDF: http://www.ephemeroptera-galactica.com/pubs/pub_l/publewisp1974p1.pdf