How to distinguish between old and new egg masses of the western spruce budworm /
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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 : U.S. Dept. of Agriculture, Cooperative State Research Service,
1984
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| Subjects: | WESTERN SPRUCE BUDWORM-EGGS, Carolin, V. M., United States. Forest Service, United States. Cooperative State Research Service, Canada/United States Spruce Budworms Program, |
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