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https://www.ansi.org/american-national-standards/info-for-standards-developers/audited-designator
Standards Developers that are Audited Designators
An Audited Designators is an ANSI-Accredited Standards Developer to whom ANSI has granted the authority to designate standards as American National Standards...
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https://www.icao.int/operational-safety/doc-8643-aircraft-type-designators
DOC 8643 - Aircraft Type Designators
Page Content​This document contains designators for those aircraft types which are most commonly provided with air traffic service (ATS). It was originally...
aircraft typedoc8643designators
https://pe.usps.com/text/pub28/28c2_003.htm
213 Secondary Address Unit Designators | Postal Explorer
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https://id.loc.gov/vocabulary/rbmsrel.html
Rare Books and Manuscripts Relationship Designators - LC Linked Data Service: Authorities and...
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