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Grid Cenedlaethol yr Arolwg Ordnans CY National Grid (Ordnance Survey) German Ordnance Survey National Grid English شبکه ملی مرجع FA Ordnance Survey National Grid French आर्डिनेंस सर्वेक्षण राष्ट्रीय ग्रिड HI Sistem grid Britania ID British national grid reference system Dutch Ordnance Survey National Grid SIMPLE İngiliz grid referans sistemi Turkish
