(1978). Supervisors Safety Manual: Better production without injury and Waste from Accidents. Chicago, Illinois: National Safety Council.
Styl ChicagoSupervisors Safety Manual: Better Production Without Injury and Waste From Accidents. Chicago, Illinois: National Safety Council, 1978.
Citace podle MLASupervisors Safety Manual: Better Production Without Injury and Waste From Accidents. Chicago, Illinois: National Safety Council, 1978.
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