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Cotton leafworm | Cotton leafworm (Alabama argillacea (Hbn.)) 全文
1949
The Biodiversity Heritage Library - United Kingdom
Cotton leafworm | Cotton leafworm (Alabama argillacea (Hbn.)) 全文
1949
Cushman, A. D.
National Agricultural Library - United States of America
Manual of bacterial plant diseases | Bacterial plant diseases
1949
Dowson, W. J.
"A work of great importance at a time when world food stocks may be considerably reduced by bacterial plant diseases. Although the standard works are outdated by recent advances, this subject has not received such attention as have fungus diseases, virus diseases and insect pests. Yet bacterial diseases are causing severe losses to many crops in different parts of the world: to sugar cane and cotton, and among our own crops to stone fruits, potatoes and tomatoes, and to trees and ornamental plants."--Cover
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National Agricultural Library - United States of America
