Water Pollution Control : 85 phrases in 18 subjects |
American usage, not spelling | 1 |
Ecology | 26 |
Economy | 1 |
Energy industry | 12 |
Finances | 2 |
Forestry | 1 |
General | 1 |
Makarov | 6 |
Medical | 3 |
Natural resourses and wildlife conservation | 12 |
Nautical | 1 |
Oil / petroleum | 2 |
Oil and gas | 1 |
Technology | 1 |
Transport | 1 |
United Nations | 1 |
Water supply | 10 |
Weapons of mass destruction | 3 |