How to protect individual trees from western spruce budworm by implants and injections /
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| Main Author: | |
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| Format: | Texto biblioteca |
| Language: | d |
| Published: |
Washington, D.C. : U.S. Dept. of Agriculture, Forest Service, Cooperative State Research Service,
1984
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| Subjects: | WESTERN SPRUCE BUDWORM-CONTROL-UNITED STATES, PESTICIDES-APPLICATION, AERIAL SPRAYING AND DUSTING IN FORESTRY-UNITED STATES, United States. Forest Service, United States. Cooperative State Research Service, Canada/United States Spruce Budworms Program, |
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