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Britannica Nobel Prize: Neptunium -
Overview and basic data.
http://www.britannica.com/nobel/micro/420_27.html Lenntech: Neptunium -
Physical data, chemical properties, health and environmental effects.
http://www.lenntech.com/Periodic-chart-elements/Np-en.htm It's Elemental: Neptunium -
Basic physical and historical information.
http://education.jlab.org/itselemental/ele093.html LANL: Neptunium -
Basic information and history.
http://periodic.lanl.gov/elements/93.html Visual Elements: Neptunium -
General and physical information, source, and key isotopes.
http://www.chemsoc.org/viselements/pages/neptunium.html ChemicalElements.com: Neptunium -
Basic information, atomic structure, and isotopes table.
http://www.chemicalelements.com/elements/np.html ChemGlobe: Neptunium -
Electronic, thermal, and steric data along with an isotope table.
http://partisans.spurious.biz/~pkremer/projects/chemglobe/ptoe/_/93.html EnvironmentalChemistry.com: Neptunium -
Atomic structure, chemical and physical properties, and table of nuclides.
http://environmentalchemistry.com/yogi/periodic/Np.html Wikipedia: Neptunium -
Notable characteristics, history, occurrence, isotopes, and weapons applications.
http://en.wikipedia.org/wiki/Neptunium WebElements: Neptunium -
Extensive information on history, uses, compounds, and properties.
http://www.webelements.com/webelements/elements/text/Np/key.html
Car Finance - Mortgages - Mortgage - Credit Card - Car Insurance--BEGIN VALIDATION CODE--
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