Energetics, Natural Resources
- Electricity Supply, Equipment, Materials - 180
- Energetics - 184
- Environment Protection, Utilisation - 27
- Fertilisers, Mineral Materials - 41
- Forestry, Forest Technology - 263
- Fuel, Oil Products, Gas-station Equipment - 167
- Gas Supply, Equipment, Materials - 14
- Geology, Geological Research, Minerals - 20
- Heating Supply, Equipment, Materials - 229
- Planning, Cartography, Geodesy - 36
- Stone, Stone Processing - 192
- Water Supply, Equipment, Materials - 65
