Search for "indigenous families system"

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Travois

A travois, from the French word travail, “to work,” was a device used for transportation by the Plains Indigenous peoples. Drawn by horses or dogs, the travois carried people’s goods to and from hunting sites and temporary settlements.

Article

Air Profile Recorder

Air Profile Recorder (APR), a narrow-beam recording radar altimeter designed to provide topographic profiles for use in the mapping of wilderness areas. The instrument employs a 3.2 cm pulse transmitter that feeds a parabolic radiator, mounted below the aircraft.