A revision of the American species of Empoasca known to occur north of Mexico
By: by Dwight M. DeLong.
Series: Technical bulletin / United States Department of Agriculture -- no. 231; Technical bulletin (United States. Dept. of Agriculture) -- no. 231.
Publisher: U.S. Dept. of Agriculture
Published: 1931
Place of publication: Washington
Language: eng
Number of pages: 60
Subjects: Leafhoppers -- Identification.; Empoasca.
Genres: Identification.
Notes: Cover title.

Literature cited: p. 58-59.