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| Collection: | RMRS Archive Images |
| Keywords: |
canker forest pathology |
| Organisms: | birch |
| Location: | |
| Description: | Canker on Betula papyrifera |
| Date: |
| Collection: | RMRS Archive Images |
| Keywords: | forest pathology |
| Organisms: |
spruce birch |
| Location: | |
| Description: | Picea glauca var. albertiana and Betula alba var. papyrifera |
| Date: |
