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Subregion - Wikipedia
Subregion Definition & Meaning - Merriam-Webster
SUBREGION Definition & Meaning | Dictionary.com
United Nations geoscheme - Wikipedia
Definitions of world regions - Our World in Data
Subregion Definition & Meaning - YourDictionary
World Population Prospects - Population Division - United Nations
subregion | Definition and example sentences - Cambridge …
SUBREGION definition in American English - Collins Online …