1.
Hidayat A, Pratama U. The Effect of Palm Fiber as a Material of Added Fiber and Charcoal Powder as Cement Subtitution Against Strong Concrete Press. IJTI [nternet]. 2021May3 [cited 2021Aug.2];4(2):84-1. vailable from: https://jurnal.narotama.ac.id/index.php/ijti/article/view/1352