검색결과 : 1건
| No. | Article |
|---|---|
| 1 |
Coal pillar extraction at deep cover: With special reference to Indian coalfields Singh R, Mandal PK, Singh AK, Kumar R, Sinha A International Journal of Coal Geology, 86(2-3), 276, 2011 |
| No. | Article |
|---|---|
| 1 |
Coal pillar extraction at deep cover: With special reference to Indian coalfields Singh R, Mandal PK, Singh AK, Kumar R, Sinha A International Journal of Coal Geology, 86(2-3), 276, 2011 |