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| инженер-гидротехник | |||
| гидротехник (Water engineer is a generic title given to engineers who specialise in water-based projects; many have a civil engineering or environmental background. VLZ_58) | |||
| water engineer: 9 do fraz, 4 tematyki |
| Energia jądrowa i termojądrowa | 1 |
| Pospolicie | 1 |
| Wojskowość | 6 |
| Zakłady przetwarzania gazu | 1 |