@book{bhlitem52456, title = {The fungus gnats of North America }, copyright = {Public domain. The BHL considers that this work is no longer under copyright protection.}, url = {https://www.biodiversitylibrary.org/item/52456}, note = {https://www.biodiversitylibrary.org/bibliography/185282}, publisher = {Orono, [University of Maine], 1909-1912}, author = {Johannsen, O. A. (Oskar Augustus),}, year = {1909}, pages = {372}, keywords = {Diptera|Mycetophilidae|North America|}, }