SYAFYUDIN, Buyung Adnan; RIZAL, Rizal; RUSFIANDI, Wandi. THE USE OF COCONUT SHELL CHARCOAL AS AN ADDED MATERIAL TO THE CONCRETE MIX OF Fc’ 14,53 MPa. RETENSI, [S. l.], v. 1, n. 2, p. 43–49, 2021. DOI: 10.31573/retensi.v1i2.321. Disponível em: https://ejurnal.polnep.ac.id/index.php/Retensi/article/view/321. Acesso em: 14 oct. 2025.