Nasra E, Etika S, Kurniawaty D, Bahrizal B, Yusmaita E. Improvement of MGMP Chemistry Teacher Competency in 50-Kota Districts on OSN Preparing Students. pelita [Internet]. 30Nov.2019 [cited 21Nov.2024];2(2):134-9. Available from: http://pelitaeksakta.ppj.unp.ac.id/index.php/pelitaeksakta/article/view/46