Columbia subject headings:
Energy policy--United States.
Oil and gas leases--United States.
Oil-shale industry--United States.
Petroleum industry and trade--United States.
Small business.
Harvard subject headings:
Energy policy--United States
Oil and gas leases--United States.
Oil-shale industry--United States.
Petroleum industry and trade--United States
Small business
Princeton subject headings:
Energy policy--United States.
Oil and gas leases--United States.
Oil-shale industry--United States.
Petroleum industry and trade--United States.
Small business.