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    <title>EnvironmentalChemistry.com: Copper</title>
    <link>https://e-sygoing.link/link/5305615-environmentalchemistrycom-copper</link>
    <description>Atomic structure, chemical and physical properties, and table of nuclides.</description>
    <pubDate>Tue, 02 Dec 2025 13:51:02 -0500</pubDate>
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    <title>Copper</title>
    <link>https://e-sygoing.link/link/5305613-copper</link>
    <description>Data tables and historic information.</description>
    <pubDate>Tue, 18 Nov 2025 15:52:16 -0500</pubDate>
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    <title>WebElements: Copper</title>
    <link>https://e-sygoing.link/link/5305616-webelements-copper</link>
    <description>Extensive information on history, uses, occurrence, compounds, and properties of the element.</description>
    <pubDate>Wed, 16 Apr 2025 14:06:39 -0400</pubDate>
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    <title>Radiochemistry of Copper</title>
    <link>https://e-sygoing.link/link/5305608-radiochemistry-of-copper</link>
    <description>Full text of the monograph by F. F. Dyer  (Oak Ridge National Laboratory, Oak Ridge, Tennessee). [PDF]</description>
    <pubDate>Fri, 20 Dec 2024 00:19:11 -0500</pubDate>
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    <title>ChemicalElements.com: Copper</title>
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    <description>Basic information, atomic structure, and table of isotopes.</description>
    <pubDate>Mon, 09 Sep 2024 17:14:59 -0400</pubDate>
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    <title>Wikipedia: Copper</title>
    <link>https://e-sygoing.link/link/5305618-wikipedia-copper</link>
    <description>Properties of the element, including its history, applications, and characteristics.</description>
    <pubDate>Mon, 12 Aug 2024 20:40:46 -0400</pubDate>
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    <title>Lenntech: Copper</title>
    <link>https://e-sygoing.link/link/5305617-lenntech-copper</link>
    <description>Physical data, chemical properties, health and environmental effects.</description>
    <pubDate>Fri, 23 Feb 2024 07:27:23 -0500</pubDate>
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