The peculiarities of bronchopulmonary system under the influence of adverse ecological factorsZhanna Abdrassulova, Sultan Tuleukhanov, Gani Issayev, Aidana Amankeldiyeva and Gulmira TurmetovaE3S Web Conf., 159 (2020) 01002DOI: https://doi.org/10.1051/e3sconf/202015901002