The Essay - Cornerstones - Gypsum and Alabaster - Â鶹ԼÅÄ Sounds

The Essay - Cornerstones - Gypsum and Alabaster - Â鶹ԼÅÄ Sounds


Cornerstones

Gypsum and Alabaster

Archaeologist Rose Ferraby gets to grips with gypsum, the key mineral in plaster.

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