Essa, M.S.I. et al. 2022. Role of Health Education in Promoting Knowledge, to-wards Personal Hygiene Among Primary School Pupils in Umbada locality, Khartoum State, Sudan (2018 - 2020). ABC Research Alert. 10, 3 (Oct. 2022), 45–55. DOI:https://doi.org/10.18034/ra.v10i3.631.