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| waste water sludge The removed materials resulting from physical, biological and chemical treatment of waste water; waste water sludge | |||
| ιλύς λυμάτων: 5 phrases in 2 subjects |
| Economy | 1 |
| Environment | 4 |
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| |||
| waste water sludge The removed materials resulting from physical, biological and chemical treatment of waste water; waste water sludge | |||
| ιλύς λυμάτων: 5 phrases in 2 subjects |
| Economy | 1 |
| Environment | 4 |