Ecology of childhood health in Central Kazakhstan during the development of Virgin LandsDiana Shapagatova, Gulnar Baigozhina, Zhanara Abdukarimova, Zauresh Saktaganova, Zhanna Mazhitova and Dina KurbanovaE3S Web of Conf., 389 (2023) 02022DOI: https://doi.org/10.1051/e3sconf/202338902022