See also:
 | - ChemGlobe: Cerium - - Electronic, thermal, and steric data along with a table of isotopes.
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 | - Lenntech: Cerium - - Physical data, chemical properties, health and environmental effects.
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 | - WebElements: Cerium - - Extensive information on history, uses, occurrence, compounds, and properties.
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 | - Wikipedia: Cerium - - Properties of the element, including its history, applications, and characteristics.
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