HENDRIKA SAPUTRA; PADILAH; ADE IRWANSYAH PUTRA NASUTION. Effrctivenes Of The Biology Learning During The Covid-19 Pandemic Class X MIPA Mas Al Wasliyah Merbau North Labuhanbatu Regency. International Journal Of Humanities Education and Social Sciences, [S. l.], v. 1, n. 3, 2021. DOI: 10.55227/ijhess.v1i3.74. Disponível em: https://ijhess.com/index.php/ijhess/article/view/74. Acesso em: 9 oct. 2025.