THE COMPOSITION AND MANUFACTURE OF EARLY MEDIEVAL COLOURED WINDOW GLASS FROM SION (VALAIS, SWITZERLAND)-A ROMAN GLASS-MAKING TRADITION OR INNOVATIVE CRAFTSMANSHIP?*.
THE COMPOSITION AND MANUFACTURE OF EARLY MEDIEVAL COLOURED WINDOW GLASS FROM SION (VALAIS, SWITZERLAND)-A ROMAN GLASS-MAKING TRADITION OR INNOVATIVE CRAFTSMANSHIP?*.
