Adimarta, Trian, and M Nopriyanti. 2020. “CHARACTERIZATION OF CALCIUM (Ca) BY USING SPECTROFOTOMETER UV-Vis FROM SIRIHLIME WITH CALCINATION METHODS OF MANGROVE CLAMSHELL IN KETAPANG”. Jurnal Pertanian 11 (1):25-28. https://doi.org/10.30997/jp.v11i1.2163.