General-purpose 220, 330, 500 and 750 kV power oil transformers. Specifications
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Furniture for seating and lying. Sofa-beds, day-beds, easy chairs, ottomans, benches, upholstery stools. Testing methods
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Television radiotransmitters of I-V bands. Basic parameters, technical requirements and measuring methods
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Vessels and apparatuses. Jacketed vessels. Norms and methods of strength calculation
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