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Pipeline valves with electromagnetic drives. Main technical data
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Low voltage systems. Cable systems. Cable systems for industrial premises for the automation and control of industrial processes. Basic principles
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Silica glass. Ðœethod for determination of chemical stability
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Tubular tips for hand-held technical pens using india ink on tracing paper. Definitions, dimensions, designation and marking
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Seamless steel tubes for oil and fuel lines. Specifications
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