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The Dipterous Families of Sepsidae and Piophilidae
By Melander AL and Spuler A
State College of Washington Agricultural Experiment Station, Bulletin No.143, pp 3-97, 1917
Cite: 1490003 with citation markup [cite:1490003]
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I can't vouch for how accurate this paper is given its age and my lack of access to new keys