Shows what soil is and how it is formed, then illustrates the damaging effects of water and wind erosion when ground cover is stripped away.
Encyclopedia Britannica, 331 N. LaSalle St., Chicago, IL 60610, Phone: (312)347-7159, Toll-free: 800-323-1229, Fax: (312)294-2104, URL: http://www.britannica.com
Available on VHS
Running time 14 minutes.
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