Halim bin Ahmad. Impact of preschool intervention on lower economic status children in Malaysia [microform] / by Halim bin Ahmad. - Ann Arbor, Mich. : University Microfilms International, 1989 - 3 microfiches ; 11 x 15 cm. Thesis (Ph.D.) - University of Michigan, 1989. Subjects--Topical Terms: Education, Preschool--Malaysia--Evaluation.Academic achievement.Achievement tests.