Energetics, Natural Resources
- Electricity Supply, Equipment, Materials - 224
- Energetics - 174
- Environment Protection, Utilisation - 273
- Fertilisers, Mineral Materials - 127
- Forestry, Forest Technology - 769
- Fuel, Oil Products, Gas-station Equipment - 548
- Gas Supply, Equipment, Materials - 30
- Geology, Geological Research, Minerals - 264
- Heating Supply, Equipment, Materials - 578
- Planning, Cartography, Geodesy - 305
- Stone, Stone Processing - 406
- Water Supply, Equipment, Materials - 283
