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| санитарно-технические работы | |||
| коммунальная канализация | |||
| городская канализационная сеть; станция очистки бытовых сточных вод | |||
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sanitary works : 4 phrases in 3 subjects |
| Architecture | 1 |
| Construction | 2 |
| Occupational health & safety | 1 |
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