Involuntary idleness. An exposition of the cause of the discrepancy existing between the supply of, and the demand for labor and its products
Slide Valve Gears: A New Graphical Method for Analyzing the Action of Slide Valves, Moved by Eccentrics, Link-Motions and Cut-Off Gears, Offering Easy . Establishing the Comparative Merits of Thei
The Cause of Business Depressions
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