Columbia subject headings:
Arabian Peninsula--Emigration and immigration--Political aspects.
Arabian Peninsula--Emigration and immigration--Social aspects.
Foreign workers--Arabian Peninsula.
Labor policy--Arabian Peninsula.
Harvard subject headings:
Arabian Peninsula--Emigration and immigration--Political aspects.
Arabian Peninsula--Emigration and immigration--Social aspects.
Foreign workers--Arabian Peninsula.
Labor policy--Arabian Peninsula.
Princeton subject headings:
Foreign workers--Persian Gulf States.
Persian Gulf States--Emigration and immigration.