How the Telephone Works (1938)

Originaltitel: How the Telephone Works

Længde: 7 minutter

• Instruktion: J.D. Chambers, Ralph Elton
• Manuskript:
• Fotografi:
• Musik:

Streaming-leverandør: 🖕

Links: TMDb IMDb

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Experimental animation produced by GPO to explain telephone systems to the public.

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