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		Sahara, E., 		Kartini, N., & 		Sibarani, J.
(2017).
 PEMANFAATAN ARANG AKTIF DARI LIMBAH TANAMAN GUMITIR (Tagetes erecta) TERAKTIVASI ASAM FOSFAT SEBAGAI ADSORBEN ION Pb2+ DAN Cu2+ DALAM LARUTAN.
<em>CAKRA KIMIA (Indonesian E-Journal Of Applied Chemistry), 5</em>(2), 67 - 74.
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