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| Collection: | Pacific Northwest Research Station, Alaska Image Archive |
| Keywords: |
forest injuries and protection: damage by animals insects: pityophthorus sp: |
| Location: | Alaska |
| Description: | Birch showing girdling by the "Birch Girdler". |
| Date: |
| Collection: | Pacific Northwest Research Station, Alaska Image Archive |
| Keywords: |
forest injuries and protection: damage by animals insects: pityophthorus sp: |
| Location: | Alaska |
| Description: | Birch showing girdling by the "Birch Girdler". |
| Date: |
