Columbia subject headings:
Chemical industry--Mississippi--History.
Fertilizer industry--Mississippi--History.
First Mississippi Corporation--History.
Gas industry--Mississippi--History.
Petroleum industry and trade--Mississippi--History.
Harvard subject headings:
Chemical industry--Mississippi--History.
Fertilizer industry--Mississippi--History.
First Mississippi Corporation--History.
Gas industry--Mississippi--History.
Petroleum industry and trade--Mississippi--History.
Princeton subject headings:
Chemical industry--Mississippi--History.
Fertilizer industry--Mississippi--History.
First Mississippi Corporation--History.
Gas industry--Mississippi--History.
Petroleum industry and trade--Mississippi--History.