Introduces the basic causes and effects of erosion and shows how mountain snows and streams help provide our water supply.
Phoenix Learning Group, 2349 Chaffee Dr., St. Louis, MO 63146, Phone: (314)569-0211, Toll-free: 800-221-1274, Fax: (314)569-2834, URL: http://www.phoenixlearninggroup.com
Available on VHS
Running time 9 minutes.
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