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<h2 class="hd hd-2 unit-title">Magnetic Fundamentals</h2>
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<h2 class="hd hd-2 unit-title">Types of Magnetic Materials</h2>
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<h3 class="hd hd-2">Types of Magnetic Materials</h3>
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<h2 class="hd hd-2 unit-title">Types of Magnetic Materials, Part 2</h2>
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<h2 class="hd hd-2 unit-title">Magnetism in Oxides</h2>
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