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CWA 16356-1:2011 Guide for a European CORE INVOICE data model with UN/CEFACT CII Implementation Guideline - Part 1: Introduction
CWA 16356-2:2011 Guide for a European CORE INVOICE data model with UN/CEFACT CII Implementation Guideline - Part 2: European CORE INVOICE data model
CWA 16356-3:2011 Guide for a European CORE INVOICE data model with UN/CEFACT CII Implementation Guideline - Part 3: European CORE INVOICE syntax mapping

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