Prosečne GPS koordinate za poštanski broj 250-853: 37.664, 127.564

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Spisak gradova:
>> Seo-myeon/서면 250-853, Gangwon-do/강원, Hongcheon-gun/홍천군, Dongmakri/길곡리, GPS koordinate: 37.66357,127.56405
>> Seo-myeon/서면 250-853, Gangwon-do/강원, Hongcheon-gun/홍천군, Gilgokri/동막리, GPS koordinate: 37.66364,127.56412
>> Seo-myeon/서면 250-853, Gangwon-do/강원, Hongcheon-gun/홍천군, Jungbangdaeri/중방대리, GPS koordinate: 37.66366,127.56414