Columbia subject headings:
Persian Gulf States--Economic conditions--Congresses.
Petroleum industry and trade--Persian Gulf States--Congresses.
Women--Employment--Persian Gulf States--Congresses.
Harvard subject headings:
Diversification in industry--Persian Gulf States--Congresses.
Persian Gulf States--Economic conditions--Congresses.
Petroleum industry and trade--Persian Gulf States--Congresses.
Women--Employment--Persian Gulf States--Congresses.
Princeton subject headings: