Suparjo, Suparjo, Akmaluddin Akmaluddin, Zaedar Gazalba, and Tety Handayani. “PENGEMBANGAN METODE PENINGKATAN KUALITAS LIMBAH AGREGAT BATU APUNG SEBAGAI MATERIAL BETON STRUKTURAL: The Development of Quality Improvement of Purnice Waste Aggregate As Structural Concrete Materials”. Spektrum Sipil 1, no. 2 (August 8, 2017): 169–178. Accessed May 18, 2024. https://spektrum.unram.ac.id/index.php/Spektrum/article/view/71.