Riandini, O. et al. 2023. Dynamics of Implementation of Ppkm Level 4 Policy For Prevention of Covid-19 Transmission in Padang City. Sumatra Journal of Disaster, Geography and Geography Education. 6, 2 (Jan. 2023), 31–35. DOI:https://doi.org/10.24036/sjdgge.v6i2.406.