Nisrina Aurellia Ananda, Oktarizka Reviandani. Analysis of the Effectiveness of Company Letter Registration and Data Collection in the Occupational Health and Safety Supervision Sector of the Manpower and Transmigration Service of East Java Province. JD [Internet]. 2025 Dec. 31 [cited 2026 Apr. 23];23(3):707-14. Available from: https://jurnaldialektika.com/index.php/piani/article/view/806