Mahsulot tavsifi
This book discusses the classification of underground coal mining technology, including longwall mining methods and room-and-pillar techniques
#koʻmir#qazish texnologiyasi#narzullayev diyorbek
Muallif
Elaka QayumovTasdiqlangan muallif
- Hujjatlari
- 8 242
- Sotilgan
- 385
