Biodiversity Heritage Library

By: Nougaret, R. L. (Raymond Louis), - Davidson, W. M. - Newcomer, E. J. (Erval Jackson),

Edition:

Publication info: Washington, D.C, U.S. Dept. of Agriculture, 1916

Volume: no.438 (1916)

Series:

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

Subjects: Diseases and pests  Pear  Pear leaf-worm

BHL Collections: