Biodiversity Heritage Library

By: Patch, Edith M. (Edith Marion),

Edition:

Publication info: Orono, Maine Agricultural Experiment Station, 1912

Volume: no.203

Series:

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

Subjects: Apples  Diseases and pests  Elm  Woolly apple aphid  

BHL Collections: Early Women in Science | Women in Natural History

By: Treherne, R. C. (Reginald Charles), - British Columbia. Horticultural Branch.

Edition:

Publication info: Victoria, B.C, W.H. Cullin, 1918

Volume:

Series:

Holding Institution: Canadiana.org

Subjects: Agricultural pests  Apple  British Columbia  Diseases and pests  Woolly apple aphid  

BHL Collections:

By: Marlatt, C. L. - United States. Bureau of Entomology.

Edition: Rev. ed.

Publication info: Washington, D.C, United States Dept of Agriculture, Bureau of Entomology, 1908

Volume: ser.2:no.20

Series:

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

Subjects: Aphids  Apples  Diseases and pests  Woolly apple aphid  

BHL Collections: