De La Cerna, Maryann A.  4  0   <br/><br/>
Ana's case :  Down Syndrome (Trisomy 21) a mental retardation /      6 
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Maryann A. de la Cerna. 
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<br/><br/>   Thesis (M.A.)-- Pamantasan ng Lungsod ng Maynila, 2010.;A case study presented to the faculty of Graduate School of Education, College of Education in partial fulfillment of the requirements for the degree Master of Arts in Special Education. 
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