Akhtamova Maftuna Zaynitdin qizi 2022. STUDY OF THE SOLUBILITY OF FERTILIZERS OBTAINED FROM LOW-GRADE PHOSPHORITES BY HEAT TREATMENT. JournalNX - A Multidisciplinary Peer Reviewed Journal. 8, 03 (Mar. 2022), 58–63. DOI:https://doi.org/10.17605/OSF.IO/AU8PG.