TY - BOOK ED - United States. Department of Health, Education and Welfare. National Center for Health Statistics. TI - The Nations use of health resources: : 1979 U1 - 54 SD:362.10973 23 PY - 1980/// CY - United States PB - Department of Health, Education and Welfare KW - Medical care--Utilization KW - Health facilities KW - United States ER -