material
Blanc de Troyes
A Champagne-region chalk whitening named from Troyes beds in French trade. Not blanc-de-meudon, and not spanish-whiting.
Also known as Troyes white · Blanc de Troyes chalk
material
A Champagne-region chalk whitening named from Troyes beds in French trade. Not blanc-de-meudon, and not spanish-whiting.
Also known as Troyes white · Blanc de Troyes chalk