Abdul Samad, Arifin Tahir and Irawaty Igirisa 2023. Performance Effectiveness of Apparatus in Improving Services in the Field of HR Development at BKPSDM Bulol District. Central Asian Journal of Social Sciences and History. 4, 1 (Jan. 2023), 14–31. DOI:https://doi.org/10.51699/cajssh.v4i1.590.