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Oktafiani IS, Ahmad NF, Ariskawanti E. Application of 5S Principles (Seiri, Seiton, Seiso, Seiketsu, Shitsuke) for Educational Facilities and Infrastructures at SMKS Hudatul Muna 2 Ponorogo. ICRSE [Internet]. 2022 Feb. 22 [cited 2026 Jul. 13];1:71-8. Available from: http://sunankalijaga.org/prosiding/index.php/icrse/article/view/777