The fungus gnats of North America, part I
By: [O.A. Johannsen]
Series: Bulletin / Maine Agricultural Experiment Station -- no.       172
Publisher: Maine Agricultural Experiment Station
Published: 1909
Place of publication: Orono
Language: eng
Number of pages: 276
Subjects: Mycetophilidae; Diptera
Other titles: Mycetophilidae of North America.
Notes: Cover title.

Caption title: The Mycetophilidae of North Amercia. Part I.

"Distributed March 1910"--Cover.