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 Muhamat, Oscar, I Nyoman Satya Kumara, & I Nyoman Budiastra. " RIVIEW SISTEM PENGOLAHAN AIR PDAM TIRTA MANGUTAMA BADUNG." Jurnal SPEKTRUM [Online], 11.2 (2024): 151-160. Web. 31 Aug. 2026