Utilization of Golden Apple Snail (Pomacea canaliculata) Shells as Liming Materials for Pangasius sp Culture in Swamp Fish PondDade Jubaedah, Marini Wijayanti, Marsi and Nazario RizaldyE3S Web Conf., 68 (2018) 04016DOI: https://doi.org/10.1051/e3sconf/20186804016