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<h2 class="hd hd-2 unit-title">Linear Programming Reformulations</h2>
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<h2 class="hd hd-2 unit-title">Algebraic Formulations</h2>
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<h2 class="hd hd-2 unit-title">Algebraic Formulations II</h2>
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<h2 class="hd hd-2 unit-title">Excel -- Diet Problem</h2>
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<h2 class="hd hd-2 unit-title">Excel -- Diet Problem II</h2>
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