San Francisco : Architect and Engineer, Inc · leaf 481
PAUL C. PETERSENSubdivider of tested … ■^ r processes 3ci6(lCite LightweightMasonry Units are manufactured byexactingproduction-line methods, withlightweight (coated, rounded-particle) expanded Shale aggre-gate, to high standards of uni-formity. This is solid assurance that every Basalile Unitcontains—high compressive strength ... low…
Architecture · Building
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
