A. R. Scabra, M. Marzuki, N. Cokrowati, B. D. H. Setyono, and L. F. . Mulyani, “INCREASING SOLUTION OF CALCIUM THROUGH THE ADDITION OF KETAPANG LEAF Terminalia catappa IN FRESH WATER MEDIUM FOR VANNAMEI SHRIMP CULTIVATION Litopennaeus vannamei”, JP, vol. 11, no. 1, pp. 35–49, May 2021.