Warning: file_get_contents(https://ojs.journalbusiness.my/ojs.php): failed to open stream: HTTP request failed! HTTP/1.1 404 Not Found in /var/www/ojs.unud.ac.id_backup/lib/pkp/includes/functions.inc.php on line 4 ANDILA, putri sri. FORMULASI HANDSANITIZER DENGAN BAHAN AKTIF SIRIH (Piper betle L.), LIDAH BUAYA (ALOE VERA (L.) BURM. F..) DAN MINYAK ATSIRI SEREH WANGI (CYMBOPOGON WINTERIANUS JOWITT) UNTUK MENCEGAH COVID-19. Buletin Udayana Mengabdi, [S.l.], v. 19, n. 3, p. 375-381, aug. 2020. ISSN 2654-9964. Available at: <https://ojs.unud.ac.id/index.php/jum/article/view/63874>. Date accessed: 29 aug. 2026.