The grape root-worm
Subtitle: with special reference to investigations in the Erie grape belt from 1907 to 1909
By: by Fred Johnson and A.G. Hammar.
Contributors: Hammar, A. G. 1880-1913.
Series: Bulletin / U.S. Dept. of Agriculture. Bureau of Entomology -- no. 89.; Bulletin (United States. Bureau of Entomology) -- no. 89.
Publisher: U.S. Dept. of Agriculture, Bureau of Entomology
Published: 1910
Place of publication: Washington, D.C
Language: eng
Number of pages: 100
Subjects: Grape-vine root-worm
Notes: Issued October 10, 1910.

Includes index.

Bibliography: p. 93-97.