Erosion

Year Published: 1950

Format: 16mm

Sound: sound

Description: Erosion From the series Primary Science Series Produced by Criswell, John F; P O Box 2; Knights Ferry; CA; 95361PC: CRIS Year published 1950 Grade Level: K P I Distributed on media: 1 film reel (10 min.), optical sound, 16 mm. Color?B & W Length: 10 MIN Description: Reveals the common causes of erosion--water, wind, ice and roots. Shows how our land is constantly being changed.

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