Organic and inorganic substances; saving natural resources

Lessons 35–36 · 2 lessons · Y.V. Malikova. Natural Science Grade 3, Part 1. Novda Edutainment, Tashkent, 2023; Y.V. Malikova. Natural Science Grade 3, Part 2. Novda Edutainment, Tashkent, 2023