Prabhat Kumar - Indian Society for Rock Mechanics and … · 2009. 11. 23. · prabhat kumar —...

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Transcript of Prabhat Kumar - Indian Society for Rock Mechanics and … · 2009. 11. 23. · prabhat kumar —...

Page 1: Prabhat Kumar - Indian Society for Rock Mechanics and … · 2009. 11. 23. · prabhat kumar — sequential excavation of a rectangular underground opening 3 4 . prabhat kumar no.
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