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Pactio Vindobonae de lege foederum
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Pactio Vindobonae de lege foederum (Francogallice: Convention de Vienne sur le droit des traités) de pactionibus foederum inter civitates et generatim, id est, "pactio pactionium" decreta die 23 Maii 1969 Vindobonae a Commissione Internationalis Legis Nationum Unitarum.
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Pactio ea et de principio "pacta sunt servanda"[1] et iure cogente[2] definitur. Hodie 45 civitates hanc signaverunt et 116 civitates hanc ratam habent.