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Tantalum and its oxides. Photometrical method for determination of molybdenum and tungsten
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Screw plug-gauges with truncated form gaging members for pipe cylindrical thread from 1 3/4'up to 3 3/4' nominal diameter. Construction and basic sizes
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Truncated form screw plug-gauges for pipe cylindrical threads from 4' up to 6' nominal diameter. Construction and basic sizes
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Truncated form screw ring-gauges for pipe cylindrical threads from 1/16' up to 3 3/4' nominal diameter. Construction and basic sizes
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Semiconductor diodes. Methods for measuring inductance
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Reference diodes and stabistors. Method for measuring time drift of working voltage
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