

How Levers Help Us
1970-01-01 · 11 min · Not rated
This instructional film shows the three parts of a lever and demonstrates how various levers help to move things more easily, or move them farther and faster.
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Production details
- Directors
- Unavailable
- Production companies
- Coronet Films
- Countries
- United States of America
- Status
- Released
Top Cast
Cast unavailable.
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