Columbia subject headings:
Harvard subject headings:
Petroleum industry and trade--Russia (Federation)
Petroleum--Taxation--Russia (Federation)
Regional economics.
Taxation--Russia (Federation)
Princeton subject headings:
Natural gas--Taxation--Law and legislation--Russia (Federation).
Natural gas--Taxation--Russia (Federation).
Petroleum--Taxation--Law and legislation--Russia (Federation).
Petroleum--Taxation--Russia (Federation).