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ISO 3166-1 alpha-2 - Wikipedia
International Country Codes (ISO, OIC, Fips, ...) - Worlddata.info
List of ISO 3166 country codes - Wikipedia
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ISO 3166-1 - Wikipedia
San Marino Country Codes | allcountrycodes.org
San Marino - Country Profile - Nations Online Project
San Marino Dialing Code, Country code +378 - nationsgeo.com
Country: San Marino (SM) - SimpleLocalize
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