Columbia subject headings:
Harvard subject headings:
Pregnant teenagers--Mexico--Social conditions.
Teenage fathers--Mexico--Social conditions.
Teenage mothers--Mexico--Social conditions.
Teenage pregnancy--Mexico--Prevention.
Teenage pregnancy--Social aspects--Mexico.
Teenagers--Sexual behavior--Mexico.
Princeton subject headings:
Teenage parents--Mexico--Social conditions.
Teenage pregnancy--Mexico--Prevention.
Teenage pregnancy--Social aspects--Mexico.
Teenagers--Sexual behavior--Mexico.