潘三矿1211(3)工作面缩小防水煤柱开采的可行性探讨
반삼광1211(3)공작면축소방수매주개채적가행성탐토
Discussion on the Feasibility of Reducing Waterproof Pillaring on 1211 ( 3 ) Working-face of Pansan Mine
저자의 최근 논문