Wilcox, G. W., & Butler, C. H. (1962). Industrial calculating devices. Holt.
Chicago Style (17th ed.) CitationWilcox, Glade W., and Charles H. Butler. Industrial Calculating Devices. [New York]: Holt, 1962.
MLA (9th ed.) CitationWilcox, Glade W., and Charles H. Butler. Industrial Calculating Devices. Holt, 1962.
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