prov:value
| - XIX) Electrolytes, and especially mono-, di- or trivalent metal salts and more particularly the salts of alkaline-earth metals and in particular barium, calcium and strontium salts, alkali metal salts, for example sodium and potassium salts, and also magnesium, beryllium, yttrium, lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium,
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