2016-06-072016-06-072016-06-07Hygiene of Children [Electronic source] : lecture : [presentation PowerPoint ] / Kharkov National Medical University, Department of Hygiene and Ecology № 1. – Electronic data (32 slides). – Kharkiv, 2016.https://repo.knmu.edu.ua/handle/123456789/13044Presentation, 32 slidesenLecture-presentation