Garo, Candelaria D. Theories and principles of education technology/ Candelaria D. Garo. - Mandaluyong City : National Book Store, ©2008. - 109 pages ; 23 cm. Includes references. ISBN: 971-08-6906-x Subjects--Topical Terms: Educational technology. Dewey Class. No.: DFil 371.33 / G19t