Fazylov, S., Abdikalykov, M., Moldybaev, A., & Muchtar, A. (2011). Investigation of properties roststimuliruyuschih sodium humate on yield of wheat. Chemical Bulletin of Kazakh National University, 64(4), 206-209. https://doi.org/https://doi.org/10.15328/chemb_2011_4206-209