See also:

• Science: Chemistry: Elements: Lanthanides  (2)

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.

Lenntech: Lanthanum - - Physical data, chemical properties, health and environmental effects.

Visual Elements: Lanthanum - - Image, appearance, source, uses, and general and physical information.

Wikipedia: Lanthanum - - Properties of the element, including its history, applications, and characteristics.