Energetics, Natural Resources
- Electricity Supply, Equipment, Materials - 158
- Energetics - 162
- Environment Protection, Utilisation - 23
- Fertilisers, Mineral Materials - 38
- Forestry, Forest Technology - 207
- Fuel, Oil Products, Gas-station Equipment - 140
- Gas Supply, Equipment, Materials - 14
- Geology, Geological Research, Minerals - 19
- Heating Supply, Equipment, Materials - 204
- Planning, Cartography, Geodesy - 31
- Stone, Stone Processing - 177
- Water Supply, Equipment, Materials - 58
