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The Quarterly journal of the Geological Society of London . ro page Comparative Sections of Devonian Old Bed Sandstone and Carboniferous Formations SOUTH OF lEELAHD NORTH DEVON HEREFORDSHIRE So rasBage and UllJCrSilu Greaf Irelamci Carboniferoas Ximcstone Slate Lower Carboniferoua Coomhola Grita EUtorcau bed Red Sandstone