J. E. Hellings grāmatas

Tunnelling 94: Papers presented at the seventh international symposium, Tunnelling94

Walter Steiner, M. A. Ginary, R. Remington, P. Catling, L. J. Arthur, Walter Dietz, D. I. Harris, A. W. P. Coutts, J. P. Farrow, J. P. Love, J. E. Hellings, J. E

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