Energetics, Natural Resources
- Electricity Supply, Equipment, Materials - 215
- Energetics - 161
- Environment Protection, Utilisation - 273
- Fertilisers, Mineral Materials - 125
- Forestry, Forest Technology - 758
- Fuel, Oil Products, Gas-station Equipment - 538
- Gas Supply, Equipment, Materials - 30
- Geology, Geological Research, Minerals - 264
- Heating Supply, Equipment, Materials - 569
- Planning, Cartography, Geodesy - 301
- Stone, Stone Processing - 397
- Water Supply, Equipment, Materials - 280
