أëàâيàے ًٌٍàيèِà ٌàéٍà
Rohr, W. H. (William Henry), b. 1888
Machine molder practice, an instructive, illustrated manual on molder work, the operation and superintendance of the molding machine
Indianapolis, Ind., Practical books co, [c1919]
تيèمà âçےٍà ٌ ٌàéٍà http://www.archive.org