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| metal blue test (MBT) | |||
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| clay percentage | |||
| clay content | |||
| содержание глин: 23 phrases in 10 subjects |
| Agriculture | 1 |
| Agrochemistry | 1 |
| Cement | 1 |
| Construction | 3 |
| Electronics | 1 |
| Geology | 3 |
| Natural resourses and wildlife conservation | 1 |
| Oil / petroleum | 9 |
| Oilfields | 1 |
| Sakhalin | 2 |