Singhal, R. K. (1986). Geotechnical stability in surface mining: Proceedings of the International Symposium on Geotechnical Stability in Surface Mining, Calgary, 6-7 November 1986. Rotterdam: A. A. Balkema.
Παραπομπή Chicago StyleSinghal, Raj K. Geotechnical Stability in Surface Mining: Proceedings of the International Symposium On Geotechnical Stability in Surface Mining, Calgary, 6-7 November 1986. Rotterdam: A. A. Balkema, 1986.
Παραπομπή MLASinghal, Raj K. Geotechnical Stability in Surface Mining: Proceedings of the International Symposium On Geotechnical Stability in Surface Mining, Calgary, 6-7 November 1986. Rotterdam: A. A. Balkema, 1986.
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