Energetics, Natural Resources
- Electricity Supply, Equipment, Materials - 213
- Energetics - 162
- Environment Protection, Utilisation - 272
- Fertilisers, Mineral Materials - 123
- Forestry, Forest Technology - 762
- Fuel, Oil Products, Gas-station Equipment - 537
- Gas Supply, Equipment, Materials - 30
- Geology, Geological Research, Minerals - 264
- Heating Supply, Equipment, Materials - 566
- Planning, Cartography, Geodesy - 301
- Stone, Stone Processing - 396
- Water Supply, Equipment, Materials - 279
