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Appletons' cyclopædia of technical drawing (1896)
Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 924
Reidler Valve, from LeavitVs Thames-Ditton Pump. (See page 365.) SCRAPS. 871 … ^ 872 SCRAPS.Mechanical drawing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
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