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ВК (W/WW Alexander Demidov) | |||
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водоочистка и водоподготовка (MichaelBurov) |
water wastewater : 23 phrases in 8 subjects |
Construction | 1 |
Ecology | 2 |
Energy industry | 3 |
General | 5 |
Makarov | 4 |
Technology | 1 |
Water supply | 6 |
Weapons of mass destruction | 1 |