Prosečne GPS koordinate za poštanski broj 40815: 18.142, -100.483

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Spisak gradova:
>> La Barranca de Marmolejo 40815, Guerrero, La Union de Isidoro Montes de Oca, GPS koordinate: 18.1417,-100.4833
>> Las Palmitas 40815, Guerrero, La Union de Isidoro Montes de Oca, GPS koordinate: 18.1417,-100.4833