Morton, G. H. (1879). The carboniferous limestone and cefn-y-fedis sandstone of the country between Llanymynech and Minera, North Wales. Boque.
MLA CitationMorton, George H. The Carboniferous Limestone and Cefn-y-fedis Sandstone of the Country Between Llanymynech and Minera, North Wales. Boque, 1879.
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