Prahmalia Tira I. ANALISIS FAKTOR-FAKTOR PRODUKSI PADA INDUSTRI SEMEN DI INDONESIA. JEP [Internet]. 2012 Jun. 18 [cited 2024 Nov. 21];10(1):31-55. Available from: https://jep.ejournal.unsri.ac.id/index.php/jep/article/view/4899