Boado, Charito B. A Training design of epidemiology and disease surveillance for rural health units in the province of La Union / Charito B. Boado. - DMMMSU-OUS : [s.n.], 2015. - xii, 120 pages : illustration ; 28 centimeter. References: pages 82-86. Subjects--Topical Terms: Public health. Dewey Class. No.: TH 362.1 B63a 2015