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Schachtbohren n | |||
Brunnenbohrung f | |||
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Brunnenbohrung f | |||
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Brunnenbohren n |
well drilling : 30 phrases in 8 subjects |
Coal | 3 |
General | 2 |
Life sciences | 1 |
Metallurgy | 4 |
Mining | 16 |
Natural resourses and wildlife conservation | 2 |
Oil / petroleum | 1 |
Transport | 1 |