Columbia subject headings:
Sex instruction for youth.
Teenage mothers--United States.
Teenage pregnancy--United States.
Teenage pregnancy.
Youth--Sexual behavior.
Harvard subject headings:
Sex instruction for youth.
Teenage mothers--United States
Teenage pregnancy--United States
Teenage pregnancy.
Youth--Sexual behavior
Princeton subject headings:
Sex instruction for youth.
Teenage mothers--United States.
Teenage pregnancy--United States.
Teenage pregnancy.
Youth--Sexual behavior.