Erbium: Difference between revisions
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'''Erbium''' was a rare [[Earth]] element. | '''Erbium''' was a rare [[Earth]] element. | ||
Revision as of 11:02, 10 October 2015
Erbium was a rare Earth element.
The Tenth Doctor described it as an expressive secondary component to xenotime. (PROSE: The Bog Warrior)
