See also:
| » ChemGlobe: Holmium - Electronic, thermal, and steric data along with an isotope table. |
| » ChemicalElements.com: Holmium - Basic information, atomic structure, and isotopes table. |
| » EnvironmentalChemistry.com: Holmium - Atomic structure, chemical and physical properties, and table of nuclides. |
| » It's Elemental: Holmium - Basic physical and historical information. |
| » LANL: Holmium - Basic information, history, and properties. |
| » Lenntech: Holmium - Physical data, chemical properties, health and environmental effects. |
| » Visual Elements: Holmium - Image, source, uses, key isotopes, and ionisation energies. |
| » WebElements: Holmium - Extensive information on history, uses, occurrence, compounds, and properties. |
| » Wikipedia: Holmium - Properties of the element, including its history, applications, and characteristics. |
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