USDA Forest Service
| 2 Images of 2 Subjects | View Subject List | View Image Details | View Thumbnails |
| Image | Subject Name | Scientific Name | Description |
|---|---|---|---|
| 1270006 | shear crack | codominant stems often reslut in a cracked trunk as the result of a weak branch union | |
| 1270008 | root lifting, soil heaving, and windthrow |


