Columbia subject headings:
Cities and towns--Arab countries--Growth.
Fertility, Human--Arab countries.
Population density--Arab countries.
Rural-urban migration--Arab countries.
Harvard subject headings:
Cities and towns--Arab countries--Growth.
Fertility, Human--Arab countries.
Population density--Arab countries.
Rural-urban migration--Arab countries.
Princeton subject headings:
Cities and towns--Arab countries--Growth.
Fertility, Human--Arab countries.
Population density--Arab countries.
Rural-urban migration--Arab countries.