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System, communication, automatic, united. Terminals for telegraphic communication and data transferring. Procedures of interaction with AT-50 and PD-200 systems
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Fixing lugs of all-cast steel and iron moulding boxes. Construction and dimensions
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Melted welding fluxes. Methods of sodium and potassium oxides determination
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Melted welding fluxes. Method of sulphur determination
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Melted welding fluxes. Method of carbon determination
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