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M.  Ahola, ?[Observations on sawfly larvae in Koski (Ta)].?, Notulae Entomologicae, vol. 54, p. 127, 1974.

W.  Héllen, ?För Finlands fauna nya Blacus-arter (Hymenoptera, Braconidae).?, Notulae Entomologicae, vol. 54, p. 16, 1974.