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| compressive strength test (Alexander Demidov) | |||
| определение прочности на сжатие: 3 phrases, 3 sujets |
| Construction | 1 |
| Forage | 1 |
| Transport | 1 |
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| |||
| compressive strength test (Alexander Demidov) | |||
| определение прочности на сжатие: 3 phrases, 3 sujets |
| Construction | 1 |
| Forage | 1 |
| Transport | 1 |