Eastern Aphids: A Few Species of Prociphilus...
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Scdophilus 3+
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The Life History of the Alder Blight Aphis. [prociphilus Tessellata Fitch.]...
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The life history of the alder blight aphis. [Prociphilus tessellata Fitch.] (U.S. Dept. of Agriculture. Bureau of Entomology. Technical series)
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