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Risk Factors: Measuring and Rating Health, Illness, and Mortality
Three examples of the Hollerith punch cards to which the Army's anthropological data were entered for processing during and after World War I. Page 63 of The Medical Department of the United States Army in the World War. Vol. 15 (Statistics), part 1 (Army Anthropology). Washington, DC: Government Printing Office, 1921-1929.
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