00682cam a22002291 4500 l 31000149 DLC 20260227111533.0 731227s1931 enk 000 0 eng c l 31000149 (OCoLC)767271 Library, U.S. Dept. of Labor VtU OCoLC DLC HD6331 .H4 338.4 Henderson, Fred, 1867-1957. The economic consequences of power production, by Fred Henderson. London, G. Allen & Unwin, ltd. [1931] 2 p. l., [9]-220 p. 19 cm. Machinery in the workplace. Power (Mechanics) Economics. 36033 36033