ISBN-13: 9781683239888 / Angielski / Miękka / 2016 / 40 str.
ISBN-13: 9781683239888 / Angielski / Miękka / 2016 / 40 str.
What protects you from viruses and bacteria that threaten your body everyday? Why is that a friend catches a cold and you don't if you are in the same environment? Learn about immunity and how your immune system works through this comprehensive but age-appropriate study tool. Train little doctors by introducing concepts most kids their age won't fully understand yet.