Numeric control machine operators training
CHELYABINSK, USSR. November 13, 1986. Work study engineer Y. Vistorovskikh takes part in a numerical control machine operators training programme in a technical study of mechanical workshop ?2. Sergei Grigoriev, a first-year student of Chelyabinsk Polytechnic Institute, is standing near the blackboard. Boris Klipinitser/TASS
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Blackboard Chelyabinsk First-year Grigoriev Klipinitser Mechanical Numerical Operators Polytechnic
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