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050 _aCD-00863t
099 _c2428
_d2428
100 _aContreras, Roberto S.
245 _aInvestigating the van hiele levels of geometric understanding of high school students on quadrilaterals
_cRoberto S. Contreras
260 _aManila
_bDe La Salle University
_c2009.
300 _aviii, 139p.
502 _bMaster of Science in Teaching
_aMathematics
630 _aMathematics
942 _cTD
999 _c2126
_d2126