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Nailah UF, Handayani W. IMPROVEMENT OF EXPANDED POLYSTRENE BARCODE SYSTEM AT PT KEMASAN CIPTATAMA SEMPURNA. ECO EDU ENTRE [Internet]. 2024Aug.30 [cited 2025Nov.13];4(2):345-52. Available from: http://ije3.esc-id.org/index.php/home/article/view/270