Nurkertamanda, D., Adiputra, I. N., Tirtayasa, K. and Adiatmika, I. P. G. (2017) “Enggrong modification reduces low back pain risk on sand workers”, International research journal of engineering, IT & scientific research, 3(6), pp. 31–38. Available at: https://sloap.org/journals/index.php/irjeis/article/view/8 (Accessed: 16 July 2024).