удаление отходов: 29 phrases in 11 subjects |
Astronautics | 1 |
Chemistry | 2 |
Construction | 1 |
Electronics | 1 |
Forestry | 5 |
International law | 3 |
Mechanic engineering | 1 |
Natural resourses and wildlife conservation | 2 |
Physics | 1 |
Technology | 2 |
United Nations | 10 |