REMOVE

1. woods (plant communities)
2. erosion
3. banks (landforms)

WHAT

1. black-and-white film (1)
2. bushes (1)
3. fields (land) (1)
4. landscapes (representatio … (1)
5. plants (1)
6. roads (1)
7. rock (1)
8. soil (1)
9. trees (1)
10. Visual Works (hierarchy n … (1)

WHO

1. Campbell, Sandra L. Still (1)
2. Sandra L. Still Campbell; … (1)

WHEN

1. 1961 (1)
2. after 1961 (1)