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Fei Nging C, Nik Hisyamudin Muhd Nor. Design of Ladder Climbing Assisting Device with Simple Mechanism and Safety Equipment. rpmme [Internet]. 2022 Aug. 14 [cited 2024 May 3];3(1):587-98. Available from: https://publisher.uthm.edu.my/periodicals/index.php/rpmme/article/view/4655