NURJANAH L. PENGARUH PENAMBAHAN ABU SERABUT KELAPA TERHADAP KUAT TEKAN BETON . JUTATEKS [Internet]. 2019Jul.18 [cited 2024Dec.23];1(2):28 -32. Available from: https://ojs.poltekba.ac.id/ojs/index.php/jutateks/article/view/56