TY - BOOK AU - U.S. Department of Health Office of Vital Statistics [U.S.] TI - Health and demography: U.S. department of health, education, and welfare, public health service, national office of vital statistics U1 - 312 PY - 1956/// CY - Washingston PB - D.C. U.S. Department of Health Education and Welfare KW - Health care - Statistics Population and health care ER -