Keskmine GPS koordinaadid postiindeks 331-709: 35.92, 126.715

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videod linnad:
>> Seonghwan-eup/성환읍 331-709, Chungcheongnam-do/충남, Seobuk-gu Cheonan-si/천안시 서북구, Cheonanyeonamdaehak/천안연암대학, GPS koordinaadid: 35.92001,126.71471