Filter by: Subject
Зараз показуються 11-15 з 3
selvages (1) |
series of strata (1) |
simultaneous mining (1) |
stress-strain state (3) |
underworking (1) |
selvages (1) |
series of strata (1) |
simultaneous mining (1) |
stress-strain state (3) |
underworking (1) |