Mariana Hristova, Nikolai Dinev, Ana Chrankina-Katsarova. CHANGES IN THE CONTENT AND COMPOSITION OF THE SOIL ORGANIC MATTER USING THE PLANT HYDROLYSATES. SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 21st SGEM International Multidisciplinary Scientific GeoConference Proceedings 2021, Water Resources. Forest, Marine and Ocean Ecosystems, 2021, pp. 349-356. https://doi.org/10.5593/sgem2021/3.1/s13.53