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The steam engine and turbine; a text-book for engineering colleges (1911)
Heck, Robert Culbertson Hays, 1870- · New York, D. Van Nostrand company · leaf 436
Fig. 281. — Van den Ker-chove Piston-lift Valves. 420 VALVE GEARS AND GOVERNORS. [Chap. VIII.Steam-engines · Steam-turbines
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