Nurkertamanda D, Adiputra IN, Tirtayasa K, Adiatmika IPG. Enggrong modification reduces low back pain risk on sand workers. IRJEIS [Internet]. 2017 Nov. 4 [cited 2025 Apr. 1];3(6):31-8. Available from: https://sloap.org/journals/index.php/irjeis/article/view/8