Welsh Slate: Archaeology and History of an Industry (Gwyn David)(Pevná vazba)

Slates from quarries in Wales once went to roof the world. By the late nineteenth century as many as a third of all the roofing slates produced worldwide came from Wales, competing withquarries in France and the United States. This book traces the industry from its origins in the Roman period, its slow medieval development, to its massive expansion in the nineteenthcentury.
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