Energetics, Natural Resources
- Electricity Supply, Equipment, Materials - 222
- Energetics - 167
- Environment Protection, Utilisation - 273
- Fertilisers, Mineral Materials - 126
- Forestry, Forest Technology - 764
- Fuel, Oil Products, Gas-station Equipment - 544
- Gas Supply, Equipment, Materials - 30
- Geology, Geological Research, Minerals - 264
- Heating Supply, Equipment, Materials - 574
- Planning, Cartography, Geodesy - 303
- Stone, Stone Processing - 402
- Water Supply, Equipment, Materials - 281
