Columbia subject headings:
Harvard subject headings:
Energy policy--European Union countries
Energy policy--Russia (Federation)
European Union
European Union countries--Foreign economic relations--Russia (Federation)
Gas industry--Government policy--European Union countries.
Gas industry--Government policy--Russia (Federation)
Russia (Federation)--Foreign economic relations--European Union countries.
Princeton subject headings:
European Union countries--Commerce--Russia (Federation).
European Union--Russia (Federation).
Gas industry--Government policy--European Union countries.
Gas industry--Government policy--Russia (Federation).
Russia (Federation)--Commerce--European Union countries.