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_aLB1028 _bF565 |
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_aFlorez Ochoa, Rafael, _eautor |
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_aInvestigacion educativa y pedagogica / _cRafael Florez Ochoa, Alonso Tobon Restrepo |
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_aBogota : _bMcGraw-Hill, _cc2001 |
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_aEducación _xInvestigación |
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_aTobon Restrepo, Alonso, _eautor |
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_asin medio _2rdamedia |
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