Astudillo Pesántez, AlbertoOrtiz Ochoa, William AlfredoSempértegui P., Catalina2014-06-302014-06-301994http://dspace.ucuenca.edu.ec/handle/123456789/16686application/pdfspaopenAccesshttp://creativecommons.org/licenses/by-nc-sa/3.0/ec/Educacion EspecialDiscalculiabachelorThesis