AIR NAVIGATION
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BTNAVIGATION + NAUTICAL ASTRONOMY + AERONAUTICAL ASTRONOMY
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UDC527.64/.8
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Descriptor GERFLUGNAVIGATION
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Descriptor ENGAIR NAVIGATION
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Descriptor FRENAVIGATION AÉRIENNE
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Variant GERNAVIGATION/FLUGNAVIGATION
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Variant ENGNAVIGATION/AIR NAVIGATION
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NTAPPROACH NAVIGATION
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NTPOSITION DETERMINATION (AERIAL NAVIGATION)