1.
Marpaung R. PENGARUH SUBSITUSI OIL PALM SHELL (OPS) + SUPERPLASTICIZER TERHADAP KUAT TEKAN, TARIK DAN BERAT BETON. Pilar [Internet]. 2012 Mar. 1 [cited 2026 Nov. 12];7(1). Available from: https://jurnal.polsri.ac.id/index.php/pilar/article/view/393