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 Fadel, I., Madrini, I., & Sumiyati, S. (2021). Pengaruh Penambahan EM-4 Terhadap Kualitas Pupuk Kompos Kotoran Gajah. Jurnal BETA (Biosistem Dan Teknik Pertanian), 9(1), 130-137. doi:10.24843/JBETA.2021.v09.i01.p14