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Low-power electronic tubes and valves. Methods of measurement of amplification factor
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Low-power electronic tubes. Mutual-conductance test methods
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Low-power electronic tubes and valves. Method of measurements of plate resistance
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Tellurium of high purity. Method for determination of sulphur
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Sawn timber of coniferous and broad-leaved species. Drying conditions in batch chambers
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Image intensifier and image converter tube. Terms, definitions and letter symbols
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