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http://tesis.ipn.mx/xmlui/handle/123456789/602
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http://tesis.ipn.mx/xmlui/handle/123456789/26208
http://tesis.ipn.mx/xmlui/handle/123456789/25874
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http://tesis.ipn.mx/xmlui/handle/123456789/10150
http://tesis.ipn.mx/xmlui/handle/123456789/25825
http://tesis.ipn.mx/xmlui/handle/123456789/27358
http://tesis.ipn.mx/xmlui/handle/123456789/19410
http://tesis.ipn.mx/xmlui/handle/123456789/20458
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http://tesis.ipn.mx/xmlui/handle/123456789/19396
http://tesis.ipn.mx/xmlui/handle/123456789/686
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http://tesis.ipn.mx/xmlui/handle/123456789/25821
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http://tesis.ipn.mx/xmlui/handle/123456789/25889
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http://tesis.ipn.mx/xmlui/handle/123456789/19412
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http://tesis.ipn.mx/xmlui/handle/123456789/19881
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http://tesis.ipn.mx/xmlui/handle/123456789/20009
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http://tesis.ipn.mx/xmlui/handle/123456789/132
http://tesis.ipn.mx/xmlui/handle/123456789/5158