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Naturvitenskap
Kjemi
Kjemi
Uorganisk kjemi
Gruppene 4, 5, 6, 7
Vanadiumgruppen (gruppe 5)
Niob
Niobforbindelser
Preferred term
546.5242
Niobforbindelser
Broader concept
546.524
Niob
Identifier
ocd00146882
Notation
546.5242
URI
http://dewey.info/class/546.5242/e23/
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Created 2/4/10, last modified 8/20/25