Columbia subject headings:
Harvard subject headings:
Alberta--Economic policy.
Alberta--Politics and government.
Petroleum industry and trade--Environmental aspects--Alberta.
Petroleum industry and trade--Government policy--Alberta.
Petroleum industry and trade--Political aspects--Alberta.
Petroleum industry and trade--Social aspects--Alberta.
Political ecology--Alberta.
Princeton subject headings:
Alberta--Economic policy.
Alberta--Politics and government.
Petroleum industry and trade--Environmental aspects--Alberta.
Petroleum industry and trade--Government policy--Alberta.
Petroleum industry and trade--Political aspects--Alberta.
Petroleum industry and trade--Social aspects--Alberta.