BeisembayevаL., O. Ponomarenko, A. Omarova, and M. Tanashev. 2011. “Chemical Ameliorant Containing Boron from Industrial Wastes”. Chemical Bulletin of Kazakh National University 64 (4), 38-41. https://doi.org/https://doi.org/10.15328/chemb_2011_438-41.