Brawner, C. O., & Milligan, V. (1972). Geotechnical practice for stability in open pit mining: Proceedings of the second International Conference on Stability in Open Mining Vancouver, B.C., Canada, November 1-2, 1971. New York: Society of Mining Engineers of the American Institute of Mining, Metallurgical, and Petroleum Engineers.
Παραπομπή Chicago StyleBrawner, C. O., and V. Milligan. Geotechnical Practice for Stability in Open Pit Mining: Proceedings of the Second International Conference On Stability in Open Mining Vancouver, B.C., Canada, November 1-2, 1971. New York: Society of Mining Engineers of the American Institute of Mining, Metallurgical, and Petroleum Engineers, 1972.
Παραπομπή MLABrawner, C. O., and V. Milligan. Geotechnical Practice for Stability in Open Pit Mining: Proceedings of the Second International Conference On Stability in Open Mining Vancouver, B.C., Canada, November 1-2, 1971. New York: Society of Mining Engineers of the American Institute of Mining, Metallurgical, and Petroleum Engineers, 1972.