KHADIJAH, Ijah. The Competency of Science Teachers in Implementation of Online Learning In Covid-19 Pandemic Period at SMPN 2 Kramatwatu Serang. Bulletin of Science Education, [S. l.], v. 1, n. 1, p. 67–79, 2021. DOI: 10.51278/bse.v1i1.110. Disponível em: https://attractivejournal.com/index.php/bse/article/view/110. Acesso em: 8 may. 2026.