| Document Date: 2014-03-12 19:26:59
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Company Zr Nb Mo Tc Ru Rh Pd Ag / Ca Sc Ti V Cr Mn Fe Co / Ge / Cs Ba Hf / / Person Al Si / Todd Helmenstine / / Position Lanthanides Actinides La Ce Pr Nd Pm / / URL http /
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Periodic Table of the Elements 1A http://chemistry.about.com 8A