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belling : 28 phrases in 14 subjects |
Bridge construction | 2 |
Construction | 1 |
Electrical engineering | 1 |
General | 9 |
Genetics | 2 |
Makarov | 1 |
Metallurgy | 1 |
Military | 2 |
Mining | 2 |
Oil / petroleum | 1 |
Oil and gas technology | 2 |
Plumbing | 1 |
Technology | 2 |
Thermal engineering | 1 |