ONTOLOGY EXPLORER
DistrictOfColumbia
<https://www.omg.org/spec/LCC/Countries/Regions/ISO3166-2-SubdivisionCodes-US/DistrictOfColumbia>
ONTOLOGY EXPLORER
<https://www.omg.org/spec/LCC/Countries/Regions/ISO3166-2-SubdivisionCodes-US/DistrictOfColumbia>