Columbia subject headings:
Harvard subject headings:
Birth control--Northeastern States--Statistics.
Demographic surveys--Northeastern States.
Fertility, Human--Northeastern States--Statistics.
Health surveys--Northeastern States.
India, Northeastern--Statistics, Vital.
Princeton subject headings:
Birth control--India, Northeastern--Statistics.
Demographic surveys--India, Northeastern.
Fertility, Human--India, Northeastern--Statistics.
Health surveys--India, Northeastern.