Prosečne GPS koordinate za poštanski broj 630-818: 35.241, 128.587

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Spisak gradova:
>> Hapseong 2(i)-dong/합성2동 630-818, Gyeongsangnam-do/경남, Masan-si/마산시, 144-149/144-149, GPS koordinate: 35.24076,128.58672
>> Hapseong 2(i)-dong/합성2동 630-818, Gyeongsangnam-do/경남, Masan-si/마산시, 155-199/155-199, GPS koordinate: 35.24075,128.58671
>> Hapseong 2(i)-dong/합성2동 630-818, Gyeongsangnam-do/경남, Masan-si/마산시, 300-328/300-328, GPS koordinate: 35.24073,128.58669