Columbia subject headings:
Birth control--India--Kerala--Statistics.
Children--Health and hygiene--India--Kerala--Statistics.
Demographic surveys--India--Kerala.
Fertility, Human--India--Kerala--Statistics.
Health surveys--India--Kerala.
Kerala (India)--Statistics, Vital.
Harvard subject headings:
Demographic surveys--India--Kerala.
Families--Health and hygiene--India--Kerala.
Health surveys--India--Kerala.
Public health--India--Kerala.
Princeton subject headings:
Birth control--India--Kerala--Statistics.
Demographic surveys--India--Kerala.
Fertility, Human--India--Kerala--Statistics.
Health surveys--India--Kerala.
Kerala (India)--Statistics, Vital.