The Columbia Encyclopedia, Sixth Edition. 2001-07.
Boisbaudran, Paul Émile Lecoq de
(pôl ml´ lkôk´ d bwäbdräN´) (KEY) , 18381912, French discoverer of the elements gallium, samarium, and dysprosium. He also made contributions in the field of spectroscopy, including his experimentation with the rare-earth metals.