Columbia subject headings:
Birth control--Developing countries.
Cantrelle, Pierre.
Demography--Developing countries.
Harvard subject headings:
Birth control--Developing countries.
Cantrelle, Pierre
Demography--Developing countries.
Developing countries--Population.
Medical care--Developing countries
Princeton subject headings:
Birth control--Developing countries.
Cantrelle, Pierre.
Demography--Developing countries.