00473nam a2200109Ia 4500008004100000050002400041100002300065245013900088260008600227300002800313521002200341140724s9999    xx            000 0 und d  aLC 4601b.B171 2013  aBalana, Katrina T. 2aA case study on the uses of direct instruction in improving self help skills of students with mental retardation /cKatrina T. Balana.  aLas Piñas, Philippines :bSouthville International School and Colleges,cc2013.  a77 p. :bill. ;c28 cm.  aSpecial Education