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Helicopter, The

Documentary

Helicopter, The

195311mUnited StatesEnglishPublic domainFree to watch

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Theory, operation and utility of helicopters.

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EBEncyclopaedia Britannica FilmsProducer

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  • MP4240p320×240 · mpeg443.5 MB
  • MP4480p640×480 · h26463.8 MB
  • Original scanOriginal scan640×480283.1 MB

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  • EnglishAI draftInternet Archive ASR.vtt

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