Gaporter1
Welcome
editWelcome!
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-- 李博杰 | —Talk contribs email 04:39, 8 October 2009 (UTC)
Barium sulfate
editThank you for your addition there. Would it be possible to add a reliable inline reference? Unreferenced addition may be deleted at some stage. Materialscientist (talk) 02:49, 29 August 2010 (UTC)