Muhamad Sholichin; Zulyusri; Lufri; Abdul Razak. Analisis Kendala Pembelajaran Online Selama Pandemi Covid-19 Pada Mata Pelajaran IPA Di SMPN 1 Bayung Lencir : (Analysis of the Obstacles of Online Learning During the Covid-19 Pandemic on IPA Subjects at SMPN 1 Bayung Lencir). Biodik 2020, 7, 163-168.