Problems of Conservation: Soil 4.0 from 0 reviews
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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:

Available on Running time 14 minutes.

Cast and Crew

Natural Resources
Encyclopedia Britannica Educational Corporation

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