The Architect & engineer of California and the Pacific Coast (1905)
San Francisco, Calif. : Architect and Engineer Co · leaf 275
t of plaster specified where slate is to be installed. Thesurface of this board is smooth, consumes very little chalk, and eliminatesto a great degree the dust, which is the worst problem to be contendedwith in the school room. A dead finish is produced, giving no reflection,making it possible to… … Su-cl Fraiuc. Transfo t-is,Un-i.^,t. Cal. \
Architecture · Building
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