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Lasers and laser-related equipment. Determination of laser resistance of tracheal tubes. Part 1. Tracheal tube shaft

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Cameras 35 mm film cartridge 135. Specifications

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Pulse transformers. Basis parameters

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Information technology. Open system interconnection. Connection oriented presentation. Protocol specification

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Projectors for 8-mm films. Parameters

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Automatic telephone exchanges. General requirements for interworking between digital and cross-bar automatic telephone exchanges

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