Najimova Iroda, Tashkenbayev Otabek. COMPARATIVE ANALYSIS OF METHODS FOR DETERMINING HUMUS FRACTIONS IN THE COMPOSITION OF GRAY SOILS (I.V.TYURIN AND V.N.SMAKOV). JARTES [Internet]. 2023 Apr. 12 [cited 2024 May 6];2(2):59-63. Available from: http://ijournal.uz/index.php/jartes/article/view/518