GOST PDF
Soils. Methods for determining the solubility of soils in water
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Electronic beam memory tubes without visible image. Parameters system
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Integrated circuits. Shapers and generators of rectangular voltage pulses. Parameters system
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Integrated circuits. Voltage regulators. Parameters system
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Integrated semiconductor circuits. Sampling and holding devices. Parameters system
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Integrated optoelectronic microcircuits and optocouplers. Parameters system
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