Moving things on land
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Shows two boys faced with the task of shifting a large box of comics. Describes friction, its usefulness, and the various means that have been devised for reducing it when undesirable. Suitable for upper primary and lower secondary levels.
Sources
- 16mm Filmography (legacy record) — title, description, catalog record
- Educational film guide. Supplements (1959-62) — title, year, length, format, color, sound, description, catalog record
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