Columbia subject headings:
Harvard subject headings:
Foreign workers--Africa, North.
Foreign workers--Middle East.
Labor mobility--Africa, North.
Labor mobility--Middle East.
Labor supply--Africa, North.
Labor supply--Middle East.
Migrant labor--Africa, North.
Migrant labor--Middle East.
Princeton subject headings:
Foreign workers--Africa, North.
Foreign workers--Middle East.
Labor mobility--Africa, North.
Labor mobility--Middle East.
Labor supply--Africa, North.
Labor supply--Middle East.
Migrant labor--Africa, North.
Migrant labor--Middle East.