Russian standards PDF
Neodymium, gadolinium, terbium, holmium, erbium, thulium and their oxides. Chemical-spectral method of determination of impurities in oxides of rare-earth elements
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Inland waterways and their navigational aids. Terms and definitions
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Brazing and soldering. Method for determination of materials welting with solders
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Laboratory glassware and equipment. General technical specifications
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Foundations reinforced concrete for parabolic shoots. Specifications
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