Mahsulot tavsifi
Learning the fundamentals of extracting inclined beds using sub-horizontal methods, including identifying and choosing opening methods in layer formations, shale seams, and interlayer surfaces
#горизонтал қатламлар#қия стволлар#штолънялар
Muallif
Mevali HududTasdiqlangan muallif
- Hujjatlari
- 9 717
- Sotilgan
- 273
