Mappæ clavicula : a manuscript treatise on the preparation of pigments, and on various processes of the decorative arts practised during the Middle Ages / communicated to the Society of Antiquaries by Sir Thomas Phillipps, Bart., F.R.S., F.S.A., in a letter addressed to Albert Way, Esq., director.

Title: 
Mappæ clavicula : a manuscript treatise on the preparation of pigments, and on various processes of the decorative arts practised during the Middle Ages / communicated to the Society of Antiquaries by Sir Thomas Phillipps, Bart., F.R.S., F.S.A., in a letter addressed to Albert Way, Esq., director.