Dysprosium

WebElements: Dysprosium - Extensive information on history, uses, occurrence, compounds, and properties.
http://www.webelements.com/webelements/elements/text/Dy/key.html

Lenntech: Dysprosium - Physical data, chemical properties, health and environmental effects.
http://www.lenntech.com/Periodic-chart-elements/Dy-en.htm

ChemGlobe: Dysprosium - Electronic, thermal, and steric data along with an isotope table.
http://partisans.spurious.biz/~pkremer/projects/chemglobe/ptoe/_/66.html

Wikipedia: Dysprosium - Properties of the element, including its history, applications, and characteristics.
http://en.wikipedia.org/wiki/Dysprosium

It's Elemental: Dysprosium - Basic physical and historical information.
http://education.jlab.org/itselemental/ele066.html

EnvironmentalChemistry.com: Dysprosium - Atomic structure, chemical and physical properties, and table of nuclides.
http://environmentalchemistry.com/yogi/periodic/Dy.html

LANL: Dysprosium - History, properties, uses, and cost.
http://periodic.lanl.gov/elements/66.html

ChemicalElements.com: Dysprosium - Basic information, atomic structure, and isotopes table.
http://www.chemicalelements.com/elements/dy.html

Visual Elements: Dysprosium - Image, source, uses, physical information, and key isotopes.
http://www.chemsoc.org/viselements/pages/dysprosium.html