Vital and health statistics: Series 10, Data from National Health Survey. 24. Disability days. United States, July 1963-June 1964, statistics on volume of days of restricted activity and bed disability, and days lost from work and school, by age, sex, residence, geographic region, usual activity status, family income, and employment status, based on data collected in household interviews during period July 1963-June 1964; [by Charles S. Wilder].

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