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Geographical variation in Pachybrachis nigricornis (Coleoptera: Chrysomelidae).
By Balsbaugh Jr, E.U. and W.L. Tucker.
The Coleopterists Bulletin 30(2): 117–131., 1976
Cite: 1410117 with citation markup [cite:1410117]
JSTOR

Balsbaugh Jr, E.U. and W.L. Tucker. 1976. Geographical variation in Pachybrachis nigricornis (Coleoptera: Chrysomelidae). The Coleopterists Bulletin 30(2): 117–131.