Wongchansri, Suttichai. “THE RESULTS OF THE DEVELOPMENT OF PREVENTIVE BEHAVIORS AGAINST COVID-19 OF THE PUBLIC HEALTH VOLUNTEER IN NAKHON PHANOM PROVINCE”. Primary Health Care Journal (Northeastern Edition) 38, no. 1 (March 9, 2023): 37–45. Accessed November 23, 2024. https://thaidj.org/index.php/pjne/article/view/12941.