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Information technology equipment. Safety. Part 21. Remote power feeding

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Eyepieces and body-tubes of the microscopes. Attaching dimensions

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Signal conversion equipment for switched and unswitched voice frequency channels. Methods tests

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Electronic data interchange for administration, commerce and transport (EDIFACT). Application level syntax rules (Syntax version number: 4, Syntax release number: 1). Part 4. Syntax and service report message for batch EDI (message type - CONTRL)

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Camera lenses. Method for measurement of the lateral aberration

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Information technology. Open systems interconnection. Protocol for providing the connectionless-mode transport service

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