Vital and health statistics: Series 10, Data from National Health Survey. 17. Chronic conditions and activity limitation, United States. July 1961-June 1963, statistics on persona limited in activity due to chronic conditions, by type of condition causing limitation, age, sex, color, usual activity status, family income, and marital status, duration of bed disability in year, based on data collected in household Interviews during July 1961-June 1963; [by Charles S. Wilder].

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