Van Zyl, D., Koval, M., & Li, T. M. (1992). Risk assessment/management issues in the environmental planning of mines. Littleton, CO.: Society for Mining, Metallurgy, and Exploration.
Παραπομπή Chicago StyleVan Zyl, Dirk, Marshall Koval, and Ta M. Li. Risk Assessment/management Issues in the Environmental Planning of Mines. Littleton, CO.: Society for Mining, Metallurgy, and Exploration, 1992.
Παραπομπή MLAVan Zyl, Dirk, Marshall Koval, and Ta M. Li. Risk Assessment/management Issues in the Environmental Planning of Mines. Littleton, CO.: Society for Mining, Metallurgy, and Exploration, 1992.
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