Difficulties encountered by the grade six pupils in mathematics at zaragoza elementary school for the school year 1999-2000 
Jenet M. Ungsod. 
 -  Polytechnic State College of Antique,  2000 
 - xii, 48 leaves;. 
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<br/><br/><label>Dewey Class. No.: </label>TH 371.33 U3d 2000