References
Filters: Keyword is Lanthanoids [Clear All Filters]
The positions of lanthanum (actinium) and lutetium (lawrencium) in the periodic table,
, Journal of Chemical Education, 08/1982, Volume 59, Issue 8, p.634-636, (1982)
WebElements: the periodic table on the WWW [http://www.webelements.com/]
Copyright 1993-2011 Mark Winter [The University of Sheffield and WebElements Ltd, UK]. All rights reserved.