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The Concept Map you are trying to access has information related to:
UPU Standards Relationships, UPU S4 Air carrier identification uses IATA Carrier Code, UPU S3 Airport identification uses IATA Airport Code, UPU S24 Representation of postal information using data identifiers uses ISO 15459:1999 Information technology -- Unique identification of transport units, Universal Postal Union develops code sets, UPU S21 Data presentation in ASN.1 uses ASN.1, S32 Postal Consignments uses code sets, code sets used by other UPU standards, Universal Postal Union develops UPU S24 Representation of postal information using data identifiers, UPU S5 Country identification codes uses ISO 3166 alpha-2 country codes, Universal Postal Union develops UPU S21 Data presentation in ASN.1
