Hustrulid, W. A., & Bullock, R. L. (2001). Underground mining methods: Engineering fundamentals and international case studies. Littleton, CO.: Society for Mining, Metallurgy, and Exploration, Inc.
Παραπομπή Chicago StyleHustrulid, William A., and Richard L. Bullock. Underground Mining Methods: Engineering Fundamentals and International Case Studies. Littleton, CO.: Society for Mining, Metallurgy, and Exploration, Inc, 2001.
Παραπομπή MLAHustrulid, William A., and Richard L. Bullock. Underground Mining Methods: Engineering Fundamentals and International Case Studies. Littleton, CO.: Society for Mining, Metallurgy, and Exploration, Inc, 2001.
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