Magnesium
http://en.wikipedia.org/wiki/Magnesium (Rank: 163041)
http://www.chemicalelements.com/elements/mg.html (Rank: 656754)
http://education.jlab.org/itselemental/ele012.html (Rank: 944481)
http://www.lenntech.com/Periodic-chart-elements/Mg-en.htm (Rank: 1439761)
http://minerals.usgs.gov/minerals/pubs/commodity/magnesium/ (Rank: 1981955)
http://periodic.lanl.gov/elements/12.html (Rank: 2161149)
http://library.lanl.gov/cgi-bin/getfile?rc000047.pdf (Rank: 2161149)
http://environmentalchemistry.com/yogi/periodic/Mg.html (Rank: 2306732)
http://www.chemsoc.org/viselements/pages/magnesium.html (Rank: 2390828)
http://partisans.spurious.biz/~pkremer/projects/chemglobe/ptoe/_/12.html (Rank: 2824277)