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Top 20 Directory:
Top : Science : Chemistry : Elements : Lanthanum
See Also:
Sites:
  		• ChemGlobe: Lanthanum: Electronic, steric, and thermal data along with an isotopes table.
  		• ChemicalElements.com: Lanthanum: Basic information, atomic structure, and isotopes.
  		• EnvironmentalChemistry.com: Lanthanum: Atomic structure, chemical and physical properties, and table of nuclides.
  		• It's Elemental: Lanthanum: Basic physical and historical information.
  		• LANL: Lanthanum: Sources, properties, isotopes, and uses.
  		• Lanthanum: Data tables and historic information.
  		• Lenntech: Lanthanum: Physical data, chemical properties, health and environmental effects.
  		• Visual Elements: Lanthanum: Image, appearance, source, uses, and general and physical information.
  		• WebElements: Lanthanum: Extensive information on history, uses, occurrence, compounds, and properties.
  		• Wikipedia: Lanthanum: Properties of the element, including its history, applications, and characteristics.
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