Smetannikov, A. ., Kosolapova, A. ., Mitrofanova, E. ., Bachurin, B. ., Onosov, D. ., Fomin, D. ., Yamaltdinova, V. ., Shishkov, D. ., & Onosova, E. . (2018). Test results of waste processing potassium-magnesium ores, as a fertilizer of prolonged action. Perm Federal Research Centre Journal, 4, 58-63. https://doi.org/10.7242/1998-2097/2017.4.9