NAVIGATION ORTHODROMIQUE (NAVIGATION)
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BTPILOTAGE DE BATEAUX (TRANSPORTS ET TRAFIC)
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UDC527.5
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Descriptor GERGROSSKREIS-SEGELN (NAVIGATION)
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Descriptor ENGGREAT-CIRCLE SAILING (NAVIGATION)
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Descriptor FRENAVIGATION ORTHODROMIQUE (NAVIGATION)
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Variant GERSEGELNAVIGATION
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Variant GERSEGEL-NAVIGATION
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Variant FREORTHODROMIE (NAVIGATION)