Immunity; health review; the research project

Lessons 29–31 · 3 lessons · Y.V. Malikova, S.V. Kosyanenko. Natural Science Grade 4, Part 1. Novda Edutainment, Tashkent, 2023; S.V. Kosyanenko, Y.V. Malikova, O.E. Tigay. Natural Science Grade 4, Part 2. Novda Edutainment, Tashkent, 2023