Columbia subject headings:
Mother and child--United States--Longitudinal studies.
Teenage mothers--Government policy--United States.
Teenage mothers--United States--Longitudinal studies.
Harvard subject headings:
Mother and child--United States--Longitudinal studies.
Teenage mothers--Government policy--United States.
Teenage mothers--United States--Longitudinal studies.
Princeton subject headings:
Mother and child--United States--Longitudinal studies.
Teenage mothers--Government policy--United States.
Teenage mothers--United States--Longitudinal studies.