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Widiastuti DW, Marpaung ND, Wardana ME. ANALISA MERKURI (Hg) PADA SEDIMEN SUNGAI AEK GANTANG DI KECAMATAN HUTABARGOT, KABUPATEN MANDAILING NATAL SUMATERA UTARA. jsti [Internet]. 2025 Jul. 30 [cited 2025 Aug. 12];23(01):40-5. Available from: http://ejurnal.istp.ac.id/index.php/jsti/article/view/479