Energetics, Natural Resources
- Electricity Supply, Equipment, Materials - 214
- Energetics - 161
- Environment Protection, Utilisation - 273
- Fertilisers, Mineral Materials - 124
- Forestry, Forest Technology - 759
- Fuel, Oil Products, Gas-station Equipment - 537
- Gas Supply, Equipment, Materials - 30
- Geology, Geological Research, Minerals - 264
- Heating Supply, Equipment, Materials - 567
- Planning, Cartography, Geodesy - 301
- Stone, Stone Processing - 396
- Water Supply, Equipment, Materials - 279
