Carboniferous: 78 phrases in 18 subjects |
Biogeography | 1 |
College vernacular | 2 |
Drilling | 1 |
Electronics | 1 |
General | 4 |
Geochronology | 14 |
Geology | 27 |
Gold mining | 3 |
Makarov | 5 |
Mining | 2 |
Oceanography & oceanology | 1 |
Oil / petroleum | 1 |
Oil and gas | 2 |
Oilfields | 1 |
Rail transport | 1 |
Silicate industry | 1 |
Stratigraphy | 10 |
Technology | 1 |