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Physics [motion pictures] learning about electronic current; electrical circuits: you can do it.
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Human beings [motion pictures] the digestive systems; the work of the heart.
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Ocen dynamics [videorecording] the works of the sea, the beach: a river of sands waves on water.
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Learning about nuclear energy, electronics and work energy from the sun [videorecording].
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Physics [videorecording] learning about electric current, electrical circuit you can do it.
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