Hemlock woolly adelgid.
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| Corporate Author: | |
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| Format: | Government Document Book |
| Language: | English |
| Published: |
Durham, NH (USDA Forest Service, P.O. Box 640, Durham 03824) :
U.S. Dept. of Agriculture, Forest Service, Northeastern Area,
[1991?]
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| Series: | Pest alert.
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| Subjects: |