zuivering : 83 phrases in 19 subjects |
Agriculture | 1 |
Chemistry | 6 |
Coal | 3 |
Customs | 1 |
Economy | 1 |
Education | 2 |
Electronics | 1 |
Environment | 31 |
Finances | 11 |
General | 7 |
Health care | 2 |
Human rights activism | 2 |
Medical | 1 |
Metallurgy | 3 |
Natural sciences | 1 |
Nuclear physics | 1 |
Social science | 3 |
Statistics | 3 |
Transport | 3 |