THE STUDY OF EDUCATION QUALITY ASSURANCE SYSTEM TO IMPROVE THE QUALITY OF PRIMARY SCHOOLS AT SD N 2 BENDOSARI BOYOLALI. JPFKIP [Internet]. 2020 Jun. 28 [cited 2025 Dec. 20];9(3):397-408. Available from: https://primary.ejournal.unri.ac.id/index.php/JPFKIP/article/view/882