 |
| waste utilization: 26 phrases in 12 subjects |
| Combustion gas turbines | 1 |
| Construction | 2 |
| Ecology | 4 |
| Food industry | 2 |
| Forestry | 2 |
| Makarov | 2 |
| Mathematics | 1 |
| Medical | 1 |
| Metallurgy | 1 |
| Natural resourses and wildlife conservation | 8 |
| Pulp and paper industry | 1 |
| Silicate industry | 1 |