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Mulyono A. BIOFILTER MANUFACTURE OF AZADIRACHTA INDICA LEAF POWDER AND ITS EFFECTIVENESS IN CAPTURING FREE RADICALS OF CIGARETTE SMOKE. SPEKTRA [Internet]. 2022 Sep. 30 [cited 2024 Nov. 24];7(2):59-66. Available from: https://journal.unj.ac.id/unj/index.php/spektra/article/view/26447