2 options
Old river.
- Format:
- Government document
- Video
- Language:
- English
- Subjects (All):
- Erosion--United States.
- Erosion.
- United States.
- Genre:
- Documentary films.
- Nonfiction films.
- Short films.
- Physical Description:
- 1 online resource : sound, black and white
- Place of Publication:
- [Washington, D.C.] : National Archives and Records Administration, [1934]
- Summary:
- Shows aerial views of a river, a close-up of boulders on a dry river bed, and a panorama of the effects of erosion. Diagrams explain the development of an old river from a young stream. Also shows how waterfalls erode away their beds.
- Notes:
- Title from title screen (viewed May 12, 2006).
- OCLC:
- 68723212
The Penn Libraries is committed to describing library materials using current, accurate, and responsible language. If you discover outdated or inaccurate language, please fill out this feedback form to report it and suggest alternative language.