Лебедева, Галина, Ина Алсиня, and Галина Телышева. 2007. “INFLUENCE OF LIGNIN PREPARATIOON ON CROPS DRY RESISTANT”. ENVIRONMENT. TECHNOLOGY. RESOURCES. Proceedings of the International Scientific and Practical Conference 1 (June): 132-40. https://doi.org/10.17770/etr2007vol1.1724.