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Appleton's dictionary of machines, mechanics, engine-work, and engineering : illustrated with four thousand engravings on wood ; in two volumes (1873)
D. Appleton and Company · New York : D. Appleton and Co. · leaf 212
T-iron, 5i inches wide between each pair of stiffeners. … Fi^. f>2-<.—Section through Girder, showingthe Stays to Stiffen the Top Piute. t.A__Mechanical engineering · Mechanics · Engineering
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