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Fixed aluminium capacitors with non-solid electrolyte. General specifications
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Magnetic sound records on 35-mm perforated film. Dimensions and location of magnetic sound records and magnetic heads. Technical requirements
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Vacuum-enclosed prove tubes. Methods of measurement of plate current of segment
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Reprography. Micrography. Readers and reader-printers. Types
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Catalogization of products for Federal State needs. Terms and definitions
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