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adjacent strata; associated beds; associated strata; attendant strata; country rock; roof and floor strata; strata; surrounding rock |
πετρώματα: 72 phrases in 12 subjects |
Chemistry | 3 |
Coal | 2 |
Earth sciences | 26 |
Economy | 1 |
Energy industry | 2 |
Environment | 3 |
General | 2 |
Labor law | 2 |
Life sciences | 12 |
Metallurgy | 14 |
Natural sciences | 4 |
Technology | 1 |