Columbia subject headings:
Fossil fuels--Caspian Sea Region--Maps.
Fossil fuels--Middle East--Maps.
Liquefied natural gas--Caspian Sea Region--Maps.
Liquefied natural gas--Middle East--Maps.
Maps.
Pipelines--Caspian Sea Region--Maps.
Pipelines--Middle East--Maps.
Power resources--Caspian Sea Region--Maps.
Power resources--Middle East--Maps.
Harvard subject headings:
Petroleum industry and trade--Caspian Sea Region--Maps.
Petroleum industry and trade--Middle East--Maps.
Pipelines--Caspian Sea Region--Maps.
Pipelines--Middle East--Maps.
Power resources--Caspian Sea Region--Maps.
Power resources--Middle East--Maps.
Princeton subject headings: