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Subjects
Cheilosia, Wood borers, Western hemlock, Diseases and pestsShowing 1 featured edition. View all 1 editions?
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Book Details
Table of Contents
Economic importance. pp. 1.
Historical. pp. 2.
Life history and habits of the hemlock bark maggot. pp. 4.
Description of the stages. pp. 5.
Habits of the larva. pp. 6.
Natural enemies. pp. 7.
Associates
Methods of preventing losses
Bark maggots in other trees
The lowland fir bark maggot. pp. 8.
The alpine fir bark maggot
The Sitka spruce bark maggot
The Yellow pine fir bark maggot
Conclusions. pp. 9.
Edition Notes
Circular No. 61.
"May 24, 1905."
At head of title: U.S. Department of Agriculture, Bureau of Entomology.
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