90003_42764_07

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90003_42764_07

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1957

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MS of 1950s scientist teaching about atomic energy. Coverage of industrial machinery.

1950s

1950s scientist talking about atomic energy, explains chemical reactions,…

1950s

Animated, visual representation of H20, two parts hydrogen and one part…

1950s

1950s scientist exaimines smoke under a microscope. Scientist talks…

1950s

MS of 1950s scientist talking about helium and atomic energy.…