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| Collection: | Penobscot Experimental Forest Historical Photo Archive |
| Keywords: | release |
| Organisms: |
gray birch white spruce |
| Location: | Penobscot Experimental Forest; Maine |
| Description: | Weeding with sodium arsenite tabs. Tab being inserted in grey birch to release white spruce sapling, on August 2 1954 |
| Date: | 8/2/1954 |
