Synopsis of the North American Syrphidae
By: by Samuel W. Williston.
Series: CIHM/ICMH microfiche series -- no. 28166.
Publisher: G.P.O.
Published: 1982
Place of publication: Washington
Language: eng
Format: Microform
Number of pages: 335
Subjects: Syrphidae.; Diptera -- North America.
Other titles: Bulletin (United States National Museum)
Notes: Added t.p.: Bulletin of the United States National Museum, no. 31.

Includes index.

Reproduction of original in: Library, National Museums of Canada.

Pre-1900 Canadiana.

Microfiche. Ottawa : Canadian Institute for Historical Microreproductions, 1982. 5 microfiches (209 fr.) ; 11 x 15 cm. (CIHM/ICMH Microfiche series = CIHM/ICMH collection de microfiches ; no. 28166).