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Kjemi
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Hydrogen og hydrogenforbindelser
Grunnstoffet hydrogen
Preferred term
546.21
Grunnstoffet hydrogen
Broader concept
546.2
Hydrogen og hydrogenforbindelser
Narrower concepts
546.212
Deuterium
546.213
Tritium
Identifier
ocd00146795
Notation
546.21
URI
http://dewey.info/class/546.21/e23/
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Created 2/4/10, last modified 2/18/13