Aquino, Gaudencio V. author Principles and methods of effective teaching / Gaudencio V. Aquino ‡ - Metro Manila : National Book Store, 1988. © 1988 - viii, 627 p. col. ill.; 22 cm. ISBN: 971-08-3188-7 Subjects--Topical Terms: EducationLC Class. No.: LB1731 / .A56 1998