66 ENERGY | MT 6616 oil industry | BT1 hydrocarbon | NT1 gas industry | NT1 shale gas | RT biogas [6626] | energy-generating product [6606] | fossil fuel [6606] | gas [6606] | hydrogen production [6811]
66 ENERGIE | MT 6616 Erdölindustrie | BT1 Kohlenwasserstoff | NT1 Gewinnung von Erdgas | NT1 Schiefergas | RT Biogas [6626] | Energieträger [6606] | fossiler Brennstoff [6606] | Gas [6606] | Wasserstofferzeugung [6811]