Jankauskiene, Zofija, Algimantas Endriukaitis, and Elvyra Gruzdeviene. “RELATIONSHIP BETWEEN FIBRE FLAX YIELD AND DIFFERENT FORMS OF NITROGEN IN THE SOIL”. ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference 1 (June 18, 2005): 101–104. Accessed April 25, 2024. https://journals.ru.lv/index.php/ETR/article/view/2131.