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I Made Dedy Bagus Astika, I Gede Arya Sena, Ni Made Rininta Adi Putri, Daryono D. Perbaikan Fleksibilitas Otot Lumbal dengan William Flexion Exercise pada Pengrajin Perak. JOKI [Internet]. 2025Dec.21 [cited 2026Jun.18];6(2):163-9. Available from: https://jurnal.stokbinaguna.ac.id/index.php/JOK/article/view/4550