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| Collection: | RMRS Archive Images |
| Keywords: | forest pathology |
| Organisms: |
ponderosa pine aspen |
| Location: | Grand Canyon N.P.; AZ; United States |
| Description: | Aspen sanitation plot |
| Date: | 11/24/1951 |
| Collection: | RMRS Archive Images |
| Keywords: | forest pathology |
| Organisms: |
mistletoe engelmann spruce aspen |
| Location: | North Rim, Grand Canyon N.P.; AZ; United States |
| Description: | Arceuthobium campylopodum f. microcarpum on englemann spruce |
| Date: |
