Rara terra/rara terrae elementa Lanthanideum cum numeris atomicis vndique ab 57 ad 71 in tabula periodica, scilicet lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), promethium (Pm) Samarium (Sm). europium (Eu), gadolinium (Gd), terbium (Tb), dysprosium (Dy), holmium (Ho), er...
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