Interval between births : United States, 1970-77

by Spratley, Ernell,
Published: U.S. Department of Health and Human Services, Public Health Service, Office of Health Research, Statistics, and Technology, National Center for Health Statistics, 1981

Birth and fertility rates for States and metropolitan areas : United States

by Spratley, Ernell,
Published: U.S. Department of Health, Education, and Welfare, Public Health Service, Health Resources Administration, National Center for Health Statistics, 1977

Selected vital and health statistics in poverty and nonpoverty areas of 19 large cities, United States, 1969-71

by Ventura, Stephanie J.
Published: U.S. Dept. of Health, Education, and Welfare, Public Health Service, Health Resources Administration, National Center for Health Statistics ; For sale by the Supt. of Docs., U.S. G.P.O., 1975

Characteristics of births : United States, 1973-1975

by Querec, Linda J.,
Published: U.S. Department of Health Education and Welfare, Public Health Service, National Center for Health Statistics, 1978

Selected vital and health statistics in poverty and nonpoverty areas in 19 large cities : United States, 1969-71

by Ventura, Stephanie J.,
Published: U.S. Department of Health, Education, and Welfare, Public Health Service, Health Resources Administration, National Center for Health Statistics, 1975