Health statistics from U.S. national health survey series. B-35. Selected impairments by etiology and activity limitation, United States, July 1959-June 1961, statistics on average prevalence of impairments involving vision, hearing, speech, absence of major extremities, paralysis, and other impairments of limbs, back, trunk, by sex, age, etiology, and chronic activity limitation, based on data collected in household interviews during July 1959-June 1961; [prepared by Louise E. Bollo].

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