Columbia subject headings:
Harvard subject headings:
Child health services--Developing countries--Congresses.
Family planning--Developing countries--Congresses.
Maternal health services--Developing countries--Congresses.
Rural health services--Developing countries--Congresses.
Princeton subject headings:
Developing countries--Birth control--Congresses.
Developing countries--Child health services--Congresses.
Developing countries--Maternal health services--Congresses.
Rural health services--Congresses.