Shpynova, N., Sartakov, M., Komissarov, I. and Grekhova, I. (2018) “Comparative characteristics of thermal stability of humic acids of sapropels of the middle ob region and south of OB-Irtysh Basin of Wstern Siberia”, Amazonia Investiga, 7(17), pp. 79-84. Available at: https://www.amazoniainvestiga.info/index.php/amazonia/article/view/330 (Accessed: 16May2024).