Columbia subject headings:
Birth control--Peru.
Family demography--Peru.
Family life surveys--Peru.
Fertility, Human--Peru.
Harvard subject headings:
Princeton subject headings:
Birth control--Peru--Statistics.
Families--Health and hygiene--Peru--Statistics.
Family demography--Peru.
Family life surveys--Peru.
Fertility, Human--Peru--Statistics.
Health surveys--Peru.
Peru--Population--Statistics.