00640nam 2200157z- 450 9910712746403321(CKB)5470000002496709(EXLCZ)99547000000249670920230509c1977uuuu -u- -engLimitation of activity due to chronic conditions, United States, 1974U.S. Department of Health, Education, and Welfare, Public Health Service, Health Resources Administration, National Center for Health StatisticsRockville, MdBOOK9910712746403321Limitation of activity due to chronic conditions, United States, 19743350991UNINA