Sidabutar, S., Kustoyo, B. and Widya, W. 2022. THE EFFECTIVENESS OF HEALTH EDUCATION ON CHANGES IN HANDWASHING BEHAVIOR IN ELEMENTARY SCHOOL CHILDREN. Jurnal Ilmiah METADATA. 4, 3 (Jul. 2022), 424-447. DOI:https://doi.org/10.47652/metadata.v4i3.837.