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Quality rating system. Machines for thermal cutting of metals. Nomenclature of indices
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Product-quality index system. Photoelectric detectors. Nomenclature of indices
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Product-quality index system. Colour picture tubes. Index nomenclature
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Product-quality index system. Optical instruments for control of surface roughness and quality. Nomenclature of indices
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Product-quality index system. Light microscopes. Nomenclature of indices
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Product-quality index system. Objective lenses. Nomenclature of indices
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