Bronze fire-resistance. Methods for the determination of iron
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Rare-earth metals and their oxides. Chemical-spectral method of determination of impurities of vanadium, iron, cobalt, manganese, copper, nickel
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Lanthanum, gadolinium, yttrium and their oxides. Method of determination of ties as oxides of neodymium, samarium, europium and erbium
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Yttrium and its oxides. Method of determination of such impurities as oxides of praseodymium, neodymium, samarium, europium, terbium, dysprosium, holmium, erbium, thulium and ytterbium
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Rare-earth metals and their oxides. Method of determination of thorium and praseodymium
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Rare-earth metals and their oxides. Methods of determination of sodium, potassium, calcium
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