Peng, S. S., & Kelley, J. H. (1982). Second conference on ground control in mining: Proceedings, West Virginia University, Morgantown, West Virginia, July 19-21, 1982. Morgantown, W.V.: Dept. of Mining Enineering, College of Mineral and Energy Resources.
Παραπομπή Chicago StylePeng, Syd S., and Jay H. Kelley. Second Conference On Ground Control in Mining: Proceedings, West Virginia University, Morgantown, West Virginia, July 19-21, 1982. Morgantown, W.V.: Dept. of Mining Enineering, College of Mineral and Energy Resources, 1982.
Παραπομπή MLAPeng, Syd S., and Jay H. Kelley. Second Conference On Ground Control in Mining: Proceedings, West Virginia University, Morgantown, West Virginia, July 19-21, 1982. Morgantown, W.V.: Dept. of Mining Enineering, College of Mineral and Energy Resources, 1982.