Plutonium

http://www.chemicalelements.com/elements/pu.html (Rank: 762702)

http://environmentalchemistry.com/yogi/periodic/Pu.html (Rank: 1044386)

http://www.lenntech.com/Periodic-chart-elements/Pu-en.htm (Rank: 1488876)

http://www.wipp.energy.gov/fctshts/plutonium.pdf (Rank: 2100911)

http://education.jlab.org/itselemental/ele094.html (Rank: 2143043)

http://www.lanl.gov/orgs/nmt/nmtdo/AQarchive/97winter/disposal.html (Rank: 2161149)

http://periodic.lanl.gov/elements/94.html (Rank: 2161149)

http://library.lanl.gov/cgi-bin/getfile?rc000033.pdf (Rank: 2161149)

http://www.chemsoc.org/viselements/pages/plutonium.html (Rank: 2390828)

http://superconductors.org/PlutonSC.htm (Rank: 2485598)

http://partisans.spurious.biz/~pkremer/projects/chemglobe/ptoe/_/94.html (Rank: 2824277)

http://www.tcaep.co.uk/science/periodic/e/094.htm (Rank: 2824277)

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