✦ LIBER ✦

831148 Stability behaviour of coal mining tunnels with different supports : Proc 1st Conference on Ground Control in Mining, Morgantown 27–29 July 1981, P67–75. Publ Morgantown: West Virginia University, 1981

✍ Scribed by B.T. Wells; B.N. Whittaker

No coin nor oath required. For personal study only.

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