[RC87.5] 610.73 73-734627 ROCOM 73 Electrical hazards in underground coal mining. [Motion picture) / U.S. Mining ... I Electric engineering Safety measures - Juvenile films. [1 . Electric ... 35 mm. and phonotapc: 5 cassettes With instructora#39;s guide, lab manuals, and test packet. CREDITS: ... (Fundamentals of service) SU MMARY: Designed to be used w ith the textbook of the same title. Deals with basicanbsp;...
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