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Senior course in mechanical drawing (1897)
Thorne, William H[enry], 1847- [from old catalog] · Philadelphia, Williams, Brown & Earle · leaf 180
Plate 36 Plate 51? … Plate 37 ~^Utte-.57„ m- iv ConnerVm6 Rod. Ya/lve Stem,.Mechanical drawing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
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