Đang chuẩn bị nút TẢI XUỐNG, xin hãy chờ
Tải xuống
Building basis of science and reality for economic - technical efficiency of PE using solutions in CM in Quang Ninh area, to make contribution to increase efficiency of coal production and coal business. | Summary of Doctor thesis Research on improving economic - Technical efficiency of prop equipment using in underground coal mining in Quang Ninh area