Types of energy sector
- en coal industry (n) ➜
- en natural gas industry (n) ➜
- en nuclear industry (n) ➜
- en oil industry (n) ➜
Links to other resources
- umbel.org /umbel/sc/EnergyEconomicSector
- sw.opencyc.org /2012/05/10/concept/en/EnergyEconomicSector