Utilization of Shrimp Shell Waste as Alternative Raw for Mariculture Tri Yulianto, Dwi Septiani Putri, Shavika Miranti and Wiwin Kusuma Atmaja Putra E3S Web Conf., 324 (2021) 03006 Published online: 16 November 2021 DOI: 10.1051/e3sconf/202132403006