de
546.4 Gruppe 3
546.41 Seltenerdelemente (Lanthanoide)
546.411 Lanthan 546.412 Cer 546.413 Praseodym und Neodym 546.414 Promethium 546.415 Samarium und Europium 546.416 Gadolinium und Terbium 546.417 Dysprosium und Holmium 546.418 Erbium und Thulium 546.419 Ytterbium und Lutetium
Dewey Decimal Classification
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