TY - BOOK AU - Abanador, Pedro. AU - ED - ED - ED - ED - SN - 9789719905417 (paperback) SN - 2 PY - 2012///;copyright 2012.46 CY - Manila, Philippines PB - Purely Books Trading & Publishing Corporation KW - KW - 2 KW - 0 KW - 6 KW - 20 KW - Educational technology N1 - Includes bibliographical references; 5 ER -