For citations:
Mamontov V.G., Belyaeva S.A., Polyakov A.M. Elemental Composition of Humic Acids of Granulometric Fractions in Typical Virgin Chernozem. Timiryazev Biological Journal. 2023;1(3):96-106. (In Russ.) https://doi.org/10.26897/2949-4710-2023-3-96-106