P Commodities > P.05 Mining commodities > Mining commodities > Natural gas

P Commodities > P.11 Fuels > Gases > Natural gas

P Commodities > P.04 Energy and Water > Gases > Natural gas

V Economics > V.12 Environmental and resource economics > V.12.02 Energy economics > Fossil fuel > Natural gas

... > V Economics > V.12 Environmental and resource economics > V.12.03 Resource economics > Exhaustible resources > Fossil fuel > Natural gas

... > V Economics > V.12 Environmental and resource economics > V.12.03 Resource economics > Natural resources > Exhaustible resources > Fossil fuel > Natural gas

... > N Related subject areas > N.10 Natural sciences and technology > N.10.01 Earth sciences and environment > N.10.01.03 Environment and ecology > Natural resources > Exhaustible resources > Fossil fuel > Natural gas

... > V Economics > V.12 Environmental and resource economics > V.12.02 Energy economics > Energy source > Fossil fuel > Natural gas

... > W Economic sectors > W.04 Energy and Water Industries > W.04.01 Energy sector > Energy source > Fossil fuel > Natural gas

P Commodities > P.04 Energy and Water > Energy source > Fossil fuel > Natural gas

W Economic sectors > W.04 Energy and Water Industries > W.04.01 Energy sector > Fossil fuel > Natural gas

... > V Economics > V.12 Environmental and resource economics > V.12.02 Energy economics > Energy source > Primary energy > Fossil fuel > Natural gas

... > W Economic sectors > W.04 Energy and Water Industries > W.04.01 Energy sector > Energy source > Primary energy > Fossil fuel > Natural gas

... > P Commodities > P.04 Energy and Water > Energy source > Primary energy > Fossil fuel > Natural gas

... > B Business economics > B.05 Materials management and logistics > B.05.01 Procurement > Raw materials > Primary energy > Fossil fuel > Natural gas

... > V Economics > V.12 Environmental and resource economics > V.12.03 Resource economics > Raw materials > Primary energy > Fossil fuel > Natural gas

P Commodities > P.04 Energy and Water > Primary energy > Fossil fuel > Natural gas

P Commodities > P.04 Energy and Water > Fossil fuel > Natural gas

P Commodities > P.05 Mining commodities > Natural gas