Russian standards PDF
High level data link control procedures. Elements of balanced procedures by the two-way simultaneous data communication and error recovery
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Information processing systems. 7-bit and 8-bit coded character sets. Code extension techniques
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Food processing machinery. Intermediate provers. Specifications
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Electrical apparatus for explosive gas atmospheres. Part 10. Classification of hazardous areas
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Sucker rods, mouth stocks and couplings for them. Specifications
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Cranes. Wire ropes. Care and maintenance, inspection and discard
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