Study of chemical (macroelement) composition of plants growing in Kostanay RegionSaule Mukhtubayeva, Anar Myrzagaliyeva A.B., Moldir Zhumagul, Adamzhanova. Zh.A and Rustemova A.D.BIO Web Conf., 100 (2024) 04042DOI: https://doi.org/10.1051/bioconf/202410004042