Columbia subject headings:
Foreign workers--Saudi Arabia.
Labor supply--Saudi Arabia.
Petroleum industry and trade--Saudi Arabia.
Wages--Saudi Arabia.
Harvard subject headings:
Foreign workers--Saudi Arabia.
Labor supply--Saudi Arabia.
Petroleum industry and trade--Saudi Arabia
Wages--Saudi Arabia.
Princeton subject headings:
Foreign workers--Saudi Arabia.
Labor supply--Saudi Arabia.
Petroleum industry and trade--Saudi Arabia.
Wages--Saudi Arabia.