| http://www.w3.org/ns/prov#value | - ationMethod and apparatus for calibrating the ionosphere and application to surveillance of geophysical eventsUS4566763 *30 Jan 198428 Jan 1986Budapesti Muszaki EgyetemPanoramic imaging block for three-dimensional spaceUS4567367 *12 Jan 198428 Jan 1986Brown De Colstoun FrancoisMethod for detecting a source of heat, more particularly a forest fire in a watched area, and system for carrying out said
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