Columbia subject headings:
Harvard subject headings:
Cities and towns--Developing countries
Developing countries--Population.
Economic development--Sociological aspects--Developing countries.
Rural development--Sociological aspects--Developing countries.
Rural-urban migration--Developing countries
Rural-urban relations--Developing countries.
Urbanization--Developing countries
Princeton subject headings:
Cities and towns--Developing countries.
Developing countries--Population.
Urbanization--Developing countries.