Ybera, Julieta I. The status of preschool education of Olivarez College ta Paranaque City / Julieta I. Ybera. - Paranaque City: Olivarez College, c2006. - xiv, 76 p. : black and white illustrations, 28 cm. Includes reference, appendix and curriculum vitae. Dewey Class. No.: OCP BEED 0278 2006