Agno, Lydia N. Principles of teaching 1: a modular approach/ Lydia N. Agno. - Quezon City: C & E Publishing, c2009. - 254 pages; 25 cm. Includes bibliographical references and index. ISBN: 978-971-584-851-0 Subjects--Topical Terms: Teaching--Principles. Dewey Class. No.: DFil 371.3 / Ag1p