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- Li, Kunmeng [remove] 5
- 624 2
- Civil engineering 2
- Civil engineering -- Periodicals 2
- Mining engineering -- Periodicals 2
- Periodicals 2
- 622.292 1
- 624.151305 1
- 624.193 1
- Abandoned mined lands reclamation -- Periodicals 1
- Active support -- Pre-stressed -- Strain-hardening -- Expandable pillars -- Pillar recovery -- Roof stability 1