A monograph of the North American Proctotrypidae
By: by William H. Ashmead.
Publisher: G.P.O.
Published: 1980
Place of publication: Washington
Language: eng
Format: Microform
Number of pages: 268
Subjects: Hymenoptera -- North America.
Other titles: Bulletin of the United States National Museum.
Notes: Includes index.

From: Bulletin of the United States National Museum ; no. 45.

Filmed from a copy of the original publication held by the Library, National Museums of Canada. Ottawa : Canadian Institute for Historical Microreproductions, 1980.

472 p. : ill.