Wanted and unwanted childbearing in the United States : 1968, 1969, and 1972 national natality surveys /
Weller, Robert H.
Heuser, Robert L.
Hyattsville, Md. : U.S. Dept. of Health, Education, and Welfare, Public Health Service. National Center for Health Statistics,
1978.
Includes bibliographical references.
Fertility, Human
Fertility, Human