ISBN 978-621-8402-48-5 (Paperbound) ISBN 978-621-8402-49-2 (epub) ISBN 978-621-8402-50-8 (PDF read only) ISBN 978-621-8402-51-5 (PDF downloadable) Author Dr. Allan A. Calderon, Dr. Ria Santos Fajilago and Dr. Henry B. Prudente; Edited by Dr. Richard D. Sanchez and Dr. Adrian Lawrence P. Carvajal