Савчук ЛЯ, Семчук ЯМ. INFLUENCE OF HARMFUL SUBSTANCE IN THE AIR ON IMMUNITY SYSTEM OF CHILDREN IN DIFFERENT SEASONS. pulse [Internet]. 2019 Jun. 5 [cited 2025 Dec. 7];(8(44):46-52. Available from: https://pvntsh.nung.edu.ua/index.php/pulse/article/view/500