History of technique in the arts, 1500-1950
Bibliography
“Synthetic blue Pigments : Ninth to Sixteenth Centuries. I. Literature”, Studies in Conservation, vol. 25, pp. 53-63, 1980.
, “Synthetic blue Pigments : Ninth to Sixteenth Centuries. II. Silver Blue”, Studies in Conservation, vol. 30, pp. 155-160, 1985.
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