Biodiversity Heritage Library

By: Gahan, A. B. (Arthur Burton),

Edition:

Publication info: Washington, D.C, U.S. Dept. of Agriculture, 1920

Volume: no.834 (1920)

Series:

Holding Institution: U.S. Department of Agriculture, National Agricultural Library

Subjects: Agricultural pests  Black grain-stem sawfly  Europe  United States

BHL Collections: