Columbia subject headings:
Gas fields--Europe, Eastern--Maps.
Gas fields--Former Soviet republics--Maps.
Gas industry--Europe, Eastern--Maps.
Gas industry--Former Soviet republics--Maps.
Maps.
Oil fields--Europe, Eastern--Maps.
Oil fields--Former Soviet republics--Maps.
Petroleum industry and trade--Europe, Eastern--Maps.
Petroleum industry and trade--Former Soviet republics--Maps.
Pipelines--Europe, Eastern--Maps.
Pipelines--Former Soviet republics--Maps.
Harvard subject headings:
Gas industry--Europe, Eastern--Maps.
Gas industry--Russia (Federation)--Maps.
Maps
Petroleum industry and trade--Europe, Eastern--Maps.
Petroleum industry and trade--Russia (Federation)--Maps.
Pipelines--Europe, Eastern--Maps.
Pipelines--Russia (Federation)--Maps.
Princeton subject headings:
Gas fields--Europe, Eastern--Maps.
Gas fields--Russia (Federation)--Maps.
Gas industry--Europe, Eastern--Maps.
Gas industry--Russia (Federation)--Maps.
Maps.
Oil fields--Europe, Eastern--Maps.
Oil fields--Russia (Federation)--Maps.
Petroleum industry and trade--Europe, Eastern--Maps.
Petroleum industry and trade--Russia (Federation)--Maps.
Pipelines--Europe, Eastern--Maps.
Pipelines--Russia (Federation)--Maps.