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Зараз показуються 1-9 з 2
coal (1) |
double-unit stopes (1) |
mine (2) |
mine working (1) |
ore (1) |
principal stresses (1) |
rock mass (2) |
stress-strain state (2) |
support (1) |
coal (1) |
double-unit stopes (1) |
mine (2) |
mine working (1) |
ore (1) |
principal stresses (1) |
rock mass (2) |
stress-strain state (2) |
support (1) |