Video-supplemented task training at the United States Steel Corp. Minntac Mine, Mt. Iron, MN / by D.T. Couillard, B.C. Nelson, and R.R. Tomassoni (Information circular ; 8999)
Video-supplemented task training at the United States Steel Corp. Minntac Mine, Mt. Iron, MN / by D.T. Couillard, B.C. Nelson, and R.R. Tomassoni