Couillard, D.T.
Video supplemented task training at the United States Steel Corp. Minntac Mine, Mt. Iron, MN Couillard, D.T. - Washignton Bureau of mines 1985
MINERIA
ACERO
622
Video supplemented task training at the United States Steel Corp. Minntac Mine, Mt. Iron, MN Couillard, D.T. - Washignton Bureau of mines 1985
MINERIA
ACERO
622