Papers on deciduous fruit insects and insecticides. Spraying experiments against the grape leafhopper in the Lake Erie Valley in 1911 /
Johnson, Fred R.
Papers on deciduous fruit insects and insecticides. Spraying experiments against the grape leafhopper in the Lake Erie Valley in 1911 / Spraying experiments against the grape leafhopper in the Lake Erie Valley in 1911 by Fred Johnson. - Washington : Govt. Print. Off., 1912. - iii, 13 p., [3] leaves of plates : ill. ; 23 cm. - United States. Bureau of Entomology. Bulletin ; no. 116, pt. 1. .
From: U.S. Bureau of Entomology bulletin, no. 116, pt. 1.
agr12001176
Grape leaf-hopper.
Spraying.
SB823 / .A2 no. 116, pt. 1
Papers on deciduous fruit insects and insecticides. Spraying experiments against the grape leafhopper in the Lake Erie Valley in 1911 / Spraying experiments against the grape leafhopper in the Lake Erie Valley in 1911 by Fred Johnson. - Washington : Govt. Print. Off., 1912. - iii, 13 p., [3] leaves of plates : ill. ; 23 cm. - United States. Bureau of Entomology. Bulletin ; no. 116, pt. 1. .
From: U.S. Bureau of Entomology bulletin, no. 116, pt. 1.
agr12001176
Grape leaf-hopper.
Spraying.
SB823 / .A2 no. 116, pt. 1