Russian standards PDF
Harmonic drive reducers and reduction gearmotors. Parameters and dimensions
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Semiconductor silicon, raw materials for its production and quartz. Method of impurities determination
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Semiconductor silicon. Method of oxygen, carbon and nitrogen determination
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Radial needle roller combined bearings and double direction thrust bearings. Specifications
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Power generating sets and mobile electric power stations with internal combustion engines. Rules of marking, parking, transportation and storage
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