The imported pine sawfly / by William Middleton.
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| Main Author: | |
|---|---|
| Corporate Author: | |
| Format: | Government Document Book |
| Language: | English |
| Published: |
Washington, D.C. :
U.S. Dept. of Agriculture,
1923.
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| Series: | Department bulletin (United States. Department of Agriculture) ;
no. 1182. |
| Subjects: |
Table of Contents:
- Introduction
- Descriptions. pp. 1.
- Life history and seasonal history. pp. 7.
- Effect of meteorological conditions. pp. 14.
- Parthenogenesis. pp. 15.
- Parasites. pp. 16.
- Hosts. pp. 17.
- Distribution in the United States
- Economic importance. pp. 20.
- Control. pp. 21.