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Elements

• 481
• ChemicalElements.com: Zirconium
• Basic information, atomic structure, and isotopes.

• 482
• It's Elemental: Zirconium
• Basic physical and historical information.

• 483
• USGS Minerals Information: Zirconium
• Statistics and information on the worldwide supply, demand, and flow of the element (PDF format).

• 484
• WebElements: Zirconium
• Extensive information on history, uses, occurrence, compounds, and properties of the element.

• 485
• Wikipedia: Zirconium
• Properties of the element, including its history, applications, and characteristics.