Energetics, Natural Resources
- Electricity Supply, Equipment, Materials - 194
- Energetics - 141
- Environment Protection, Utilisation - 270
- Fertilisers, Mineral Materials - 122
- Forestry, Forest Technology - 745
- Fuel, Oil Products, Gas-station Equipment - 518
- Gas Supply, Equipment, Materials - 30
- Geology, Geological Research, Minerals - 263
- Heating Supply, Equipment, Materials - 546
- Planning, Cartography, Geodesy - 300
- Stone, Stone Processing - 390
- Water Supply, Equipment, Materials - 276