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Determination of Centroids by Integration 1/2 (5-18)       | 
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Determination of Centroids by Integration 2/2 (5-19)       | 
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Choice of Element Integration  (5-20)       | 
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Choice of Coordinates (5-21)       | 
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Example (5-22)       | 
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Example (5-23)       | 
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Example (5-24)       | 
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Example (5-25)       | 
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Example (5-26)       | 
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Example (5-27)       | 
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Example (5-28)       | 
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Example (5-29)       | 
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Example (5-30)       | 
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Example (5-31)       | 
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