Stresses and displacements induced in rock by tunnel boring machine props

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086 0 ‡aI 28.23:7200
100 1 ‡aDuvall, Wilbur I.
245 1 0 ‡aStresses and displacements induced in rock by tunnel boring machine props / ‡cby Wilbur I. Duvall and Wilson Blake.
260 ‡a[Washington, D.C.] : ‡bU.S. Dept. of the Interior, Bureau of Mines, ‡c[1968]
300 ‡a29 p. : ‡bill. ; ‡c26 cm.
490 0 ‡aReport of investigations / Bureau of Mines ; ‡v7200
500 ‡aErrata slip inserted.
500 ‡a"November 1968"--Cover.
504 ‡aBibliography: p. 23.
538 ‡aMode of access: Internet.
650 0 ‡aTunneling.
650 0 ‡aStrains and stresses.
650 0 ‡aBoring machinery.
700 1 ‡aBlake, Wilson.
710 1 ‡aUnited States. ‡bBureau of Mines.
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