Energetics, Natural Resources
- Electricity Supply, Equipment, Materials - 174
- Energetics - 174
- Environment Protection, Utilisation - 24
- Fertilisers, Mineral Materials - 41
- Forestry, Forest Technology - 224
- Fuel, Oil Products, Gas-station Equipment - 155
- Gas Supply, Equipment, Materials - 14
- Geology, Geological Research, Minerals - 20
- Heating Supply, Equipment, Materials - 217
- Planning, Cartography, Geodesy - 35
- Stone, Stone Processing - 187
- Water Supply, Equipment, Materials - 63
