Chronic conditions and limitations of activity and mobility , United States, July 1965-June 1967 /
Wilder, Charles S.
Rockville, Md. : National Center for Health Statistics,
1971.
"Statistics on persons limited in activity and mobility due to chronic conditions, by type of condition causing limitation, age, sex ... Based on data collected in household interviews during the period July 1965-June 1967."
Chronic diseases