Energetics, Natural Resources
- Electricity Supply, Equipment, Materials - 142
- Energetics - 134
- Environment Protection, Utilisation - 21
- Fertilisers, Mineral Materials - 35
- Forestry, Forest Technology - 189
- Fuel, Oil Products, Gas-station Equipment - 124
- Gas Supply, Equipment, Materials - 14
- Geology, Geological Research, Minerals - 19
- Heating Supply, Equipment, Materials - 185
- Planning, Cartography, Geodesy - 28
- Stone, Stone Processing - 166
- Water Supply, Equipment, Materials - 55
