ISBN 978-621-8402-56-0 (Paperbound) ISBN 978-621-8402-57-7 (epub) ISBN 978-621-8402-58-4 (PDF read only) ISBN 978-621-8402-59-1 (PDF downloadable) Author Dr. Allan A. Calderon, Dr. Ria Santos Fajilago and Dr. Henry B. Prudente; Edited by Dr. Adrian Lawrence P. Carvajal and Dr. Richard D. Sanchez