LARASATI, Deka; 						NURTANTO, Dwi; 						UTAMI, Nanin Meyfa.
 Effect of Duck Egg Shell Ash with Fly Ash as Cement Substitution in Geopolymer Concrete.
<strong>BERKALA SAINSTEK</strong>, [S.l.], v. 10, n. 2, p. 51-57, june 2022.
ISSN 2339-0069.
Available at: &lt;<a href="https://jurnal.unej.ac.id/index.php/BST/article/view/29080" target="_new">https://jurnal.unej.ac.id/index.php/BST/article/view/29080</a>&gt;. Date accessed: 13 nov. 2024.
doi: <a href="https://doi.org/10.19184/bst.v10i2.29080">https://doi.org/10.19184/bst.v10i2.29080</a>.