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A Revision of the Nearctic Cephidae (Hymenoptera: Tenthredinoidea)
By Donald T. Ries
Transactions of the American Entomological Society, Vol. 63, No. 3, pp. 259-324 , 1939
Cite: 1313303 with citation markup [cite:1313303]
Read online free at JSTOR

Alternate access + publication date correction --> 1937
This revision can be freely-accessed via this link from the Cornell University Library Digital Collections.

Two advantages over using JSTOR:

1) you can directly link to a specific page of the paper if desired; and 2) you can read more than the 1st page without having to first start an account w/ JSTOR.
Note also that the publication date of this revision of Cephidae (and journal volume where it appeared) was 1937 (not 1939...as currently listed above).

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