Mycelia Paradise, Ag. Isjudarto, H. Kresno. Economic Evaluation Economic Evaluation of Andesit Processing Plant at PT. Calvary Abadi in Somopuro Village Jogonalan Klaten. Prosiding Seminar Nasional ReTII [Internet]. 2019Nov.4 [cited 2024Apr.20];:41-7. Available from: //journal.itny.ac.id/index.php/ReTII/article/view/1453