Papers on deciduous fruit insects and insecticides. Vineyard spraying experiments against the rose-chafer in the Lake Erie Valley.
Johnson, Fred.
Papers on deciduous fruit insects and insecticides. Vineyard spraying experiments against the rose-chafer in the Lake Erie Valley. By FredJohnson ... - Washington, Govt. print. off., 1911. - iv p., p. 53-64. illus., pl. IV-VII. 23 cm. - U.S. Dept. of agriculture. Bureau of entomology. Bulletin no. 97, pt. III .
agr11000734
Rose-chafer.
Grapes--Spraying.
SB933 / .U18 no. 97, pt. III
Papers on deciduous fruit insects and insecticides. Vineyard spraying experiments against the rose-chafer in the Lake Erie Valley. By FredJohnson ... - Washington, Govt. print. off., 1911. - iv p., p. 53-64. illus., pl. IV-VII. 23 cm. - U.S. Dept. of agriculture. Bureau of entomology. Bulletin no. 97, pt. III .
agr11000734
Rose-chafer.
Grapes--Spraying.
SB933 / .U18 no. 97, pt. III