Wectar - Science - Chemistry - Elements - Erbium

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	ChemicalElements.com: Erbium URL: http://www.chemicalelements.com/elements/er.html ODP description: Basic information, atomic structure, and isotopes. Page title: Chemical Elements.com - Erbium (Er)
	Wikipedia: Erbium URL: http://en.wikipedia.org/wiki/Erbium ODP description: Properties of the element, including its history, applications, and characteristics. Page title: Erbium - Wikipedia, the free encyclopedia
	Visual Elements: Erbium URL: http://www.chemsoc.org/viselements/pages/erbium.html ODP description: Image, physical information, key isotopes, and ionisation energies. Page title: Visual Elements - Erbium
	WebElements: Erbium URL: http://www.webelements.com/webelements/elements/text/Er/key.html ODP description: Extensive information on history, uses, occurrence, compounds, and properties. Page title: Chemistry : Periodic Table : erbium : key information
	EnvironmentalChemistry.com: Erbium URL: http://environmentalchemistry.com/yogi/periodic/Er.html ODP description: Atomic structure, chemical and physical properties, and table of nuclides. Page title: Periodic Table of Elements: Erbium â Er (EnvironmentalChemistry.com)
	LANL: Erbium URL: http://periodic.lanl.gov/elements/68.html ODP description: Basic information and history. Page title: Erbium
	It's Elemental: Erbium URL: http://education.jlab.org/itselemental/ele068.html ODP description: Basic physical and historical information. Page title: It's Elemental - The Element Erbium Page description: The Element Erbium - Basic Physical and Historical Information
	Lenntech: Erbium URL: http://www.lenntech.com/Periodic-chart-elements/Er-en.htm ODP description: Physical data, chemical properties, health and environmental effects. Page title: Erbium (Er) - Chemical properties, Health and Environmental effects Page description: chemical properties, health and environmental effects of erbium
	ChemGlobe: Erbium URL: http://partisans.spurious.biz/~pkremer/projects/chemglobe/ptoe/_/68.html ODP description: Electronic, thermal, and steric data along with an isotope table. Page title: Erbium [Er] [68] - Chemical element datasheet - Periodic Table of the Elements - ChemGlobe