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_aPeña Ramirez, Jaime, _d1948- |
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_aDidáctica de la investigación económico-social / _cJaime PeñaRamírez. |
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_aMéxico : _bUNAM, _cCampus Acatlán : Plaza y Valdés, 2000 |
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_aINVESTIGACION _xMETODOLOGIA |
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