Columbia subject headings:
Developing countries--Economic policy.
Developing countries--Population.
Food supply--Developing countries.
Labor supply--Developing countries.
Natural resources--Developing countries.
Harvard subject headings:
Developing countries--Economic policy.
Developing countries--Population.
Food supply--Developing countries
Labor supply--Developing countries.
Natural resources--Developing countries
Princeton subject headings:
Developing countries--Economic policy.
Developing countries--Population.
Food supply--Developing countries.
Labor supply--Developing countries.
Natural resources--Developing countries.