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Extraction of Chitosan from Shrimp Shells Waste as Cu Metal Ions Adsorbent in Bangka Tin Kulong’s Water. PROMINE [Internet]. 2021 Mar. 4 [cited 2025 Nov. 8];8(2):65-71. Available from: https://journal.ubb.ac.id/index.php/promine/article/view/2070