SCHAAF, WILLIAM L., ed.
The practical outline of mechanical trades for home study. Assisted by a staff of technical specialists & authorities.
SCHAAF, WILLIAM L., ed. The practical outline of mechanical trades for home study. Assisted by a staff of technical specialists & authorities. © 24Nov42; A169766. William L. Schaaf (A & PWH); 22Dec69; R476158.
William L. Schaaf|A & PWH