The Pillars of the Philippine Dental Association. Past Presidents of the PDA. Dr. Bonifacio Arevalo(+) 1908 Dr. Antonio Oliveros(+) 1916 Dr. Francisco Tecson(+) 1925-27 Dr. Joaquin C. Ladao, Sr.(+) 1927-30, 1936-46 Dr. Eladio R. Aldecoa(+) 1930-32, 1934-36 Dr. Gregorio N. Agramon(+) 1932-33 Dr. Gervasio A. Erana(+) 1933-34 Dr. Eugenio C. Villanueva(+) 1938-40 Dr. Ermelo Vergel […]