CWA 17028-303:2016 Business Interoperability Interfaces for Public Procurement in Europe - E-Catalogue - Part 303: UN/CEFACT Syntax Implementation Guideline for Trdm020 Catalogue Item Update
2020CWA 17028-303:2016 Business Interoperability Interfaces for Public Procurement in Europe - E-Catalogue - Part 303: UN/CEFACT Syntax Implementation Guideline for Trdm020 Catalogue Item Update