STUDI UNJUK KERJA BOILER KAPASITAS 18 TON/JAM DI LINGKUNGAN PABRIK KELAPA SAWIT. js [Internet]. 2017 Jun. 30 [cited 2026 Sep. 15];5(1):30-7. Available from: https://ejournal.sttp-yds.ac.id/index.php/js/article/view/95