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The Quarterly journal of the Geological Society of London . CORRELATION OF UPPER CARBONIFEROUS OR PERMIAN STRATA Quart Journ GeolSocVolXXXOWt SECTION OF STRATA FROM CHI RK DE BICHSHIRE TO IFTON HEATH SHROPSHIRE rn COLLIERIES fFTON HE MTH tf Wtual Saalt null to tL Pl Text biodiversitylibrary org Geological Society of