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Electric filament lamps for general purpose. Specifications
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Screws with cylinder head of smaller diameter for electrical engineering. Construction and dimensions
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State system for ensuring the uniformity of measurements. Nuclear-physical characteristics and other main data on properties of materials and substances used in the field of nuclear science and technology. Basic principles. Part 1. Radionuclide nuclear-physical characteristics
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Radio-frequency cable type PK 75-4-15. Specifications
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Renewable power engineering. Solar energy. Methods of testing preformed rubber seals and sealing compounds used in collectors
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Electrical relays. Part 12. Directional relays and power relays with two input energizing quantities
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