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Modular order for the development of mechanical structures for electronic equipment practices. Part 2. Sectional specification. Interface coordination dimensions for the 25 mm equipment practice. Section 1. Detail specification. Dimensions for cabinets and racks

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Optical fibres. Part 1-42. Measurement methods and test procedures. Chromatic dispersion

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Unified system for program documentation. Indexing of programs and program documents

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Low-power electronic tubes and valves. Methods of measurement of cathode heating time and readiness time

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Information processing systems. Open systems interconnection. Basic connection oriented session protocol specification

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