Russian standards PDF
Explosion protected light devices for mines. General specification
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Complex gauges for splined straightsided joints. Types, basic dimensions
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Alloys and foundry alloys of rare metals. Methods for determination of zirconium
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Secondary radar systems for air traffic control. The measuring methods of main parameters
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Raremetallic concentrates. Spectral methods of the determination of alumina, barium, iron, calcium, silicon, magnum, niobium, tantalum, titanium, zirconium and chromium oxide
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