Electricity produced by magnetism [filem gelung]
12
| Main Author: | |
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| Format: | |
| Published: |
Boulder, Colo. : Thorne Films,
1980
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| Subjects: |
12
| Main Author: | |
|---|---|
| Format: | |
| Published: |
Boulder, Colo. : Thorne Films,
1980
|
| Subjects: |