Prosečne GPS koordinate za poštanski broj 664-821: 35.023, 127.994

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Spisak gradova:
>> Seopo-myeon/서포면 664-821, Gyeongsangnam-do/경남, Sacheon-si/사천시, Gurangri/구랑리, GPS koordinate: 35.02343,127.99436
>> Seopo-myeon/서포면 664-821, Gyeongsangnam-do/경남, Sacheon-si/사천시, Jahyeri/자혜리, GPS koordinate: 35.02341,127.99434
>> Seopo-myeon/서포면 664-821, Gyeongsangnam-do/경남, Sacheon-si/사천시, Jodori/조도리, GPS koordinate: 35.02348,127.99441