"Meditationis est perscrutari occulta; contemplationis est admirari perspicua . . . Admiratio generat qurestionem, qurestio investigationem, investigatio inventionem" once wrote HUGO DE S. VICTORE and possibly described best the life span of the rare earths since the Swedish Army Lieutenant, C. A. ARRHENIDS' discovery of an unusual black mineral at Ytterby in 1787. Since then the rare earths have passed through the machinery of various phases of physical science. Europium as a member of the rare earth family shows ...

Europium 2012, Springer, Berlin, Heidelberg

ISBN-13: 9783642999208

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Europium 1967, Springer, Berlin, Heidelberg

ISBN-13: 9783540037231

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