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Dimitri Mendeleev
http://www.zephyrus.co.uk/dimitrimendeleev.html
Contains a biography about the man who discovered the periodic law and developed the periodic table.
Dimitri Mendeleev
http://www.pbs.org/wnet/hawking/cosmostar/html/cstars_mendel.html
Brief biography about Dimitri Mendeleev, the developer of the periodic table.