[1]
Marni Olypia Sinaga et al.trans. 2022. Description of Hand Washing and Mask Wearing Knowledge during the Pandemic in Grade 4-5 School Children at Dolok Nagodang State Elementary School in 2021. Jurnal Indah Sains dan Klinis. 3, 2 (Aug. 2022), 18–22. DOI:https://doi.org/10.52622/jisk.v3i2.50.