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Roof.bosses.arp. Zu Knufen ausgebildete Schlusssteine im Gewlbe der St Mary Redcliffe Kirche Bristol England Nave roof bosses in St Mary Redcliffe church Bristol England Clefs de vote dites en noeud dans le votement de l'glise St Mary Redcliffe Bristol Angleterre Taken by Adrian Pingstone in April and released to the public domain