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Add new Web site: Journal of Research in Medical and Dental Science - Zirconium Restorations-A review. |
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Nov 28, 2024 |
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Add new Web site: University of Pretoria - Institutional Repository - Properties of Zirconium. |
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Oct 17, 2024 |
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Add new Web site: USGS Publications Warehouse - Zirconium and Hafnium. |
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Sep 06, 2024 |
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Add new Web site: Nature - The AZ of zirconium. |
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Jun 12, 2024 |
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Media added. |
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Mar 04, 2024 |
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Add new Web site: Lenntech - Zirconium - Zr. |
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Dec 12, 2023 |
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Add new Web site: National Center for Biotechnology Information - PubChem - Zirconium. |
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Sep 22, 2023 |
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Add new Web site: LiveScience - Facts About Zirconium. |
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Feb 16, 2017 |
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Text added noting top-producing countries of zirconium. |
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Sep 05, 2013 |
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Add new Web site: Webelements - Zirconium. |
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Jun 11, 2013 |
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Add new Web site: Royal Society of Chemistry - Zirconium. |
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Jun 11, 2013 |
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Add new Web site: Hyperphysics - Zirconium. |
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Jun 11, 2013 |
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Add new Web site: Jefferson Lab - Zirconium. |
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Jun 11, 2013 |
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Add new Web site: Fact Monster - Encyclopedia - Zirconium. |
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Jun 21, 2011 |
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Add new Web site: EnvironmentalChemistry.com - Zirconium. |
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Jun 21, 2011 |
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Add new Web site: ThinkQuest - Zirconium. |
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Jun 21, 2011 |
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Add new Web site: Buzzle.com - Zirconium. |
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Jun 21, 2011 |
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Add new Web site: Chemical Elements.com - Zirconium. |
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Jun 21, 2011 |
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The word "lanthanide" was modified to "lanthanoid." |
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Jan 25, 2011 |
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Article revised and updated. |
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Apr 17, 2009 |
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Media added. |
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Jan 29, 2009 |
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Combined with zirconium section of "transition element" article. |
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Jan 29, 2009 |
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Media added. |
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Aug 19, 2008 |
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Added new Web site: Los Alamos National Laboratory - Zirconium. |
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May 05, 2008 |
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Article revised and updated. |
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Apr 12, 2007 |
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Article added to new online database. |
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Jul 20, 1998 |
