Tomulescu, Ioana Mihaela, Edith Mihaela Radoviciu, Vasilica Viorica Merca, and Adela Dana Tuduce. “Effect of Copper, Zinc and Lead and Their Combinations on the Germination Capacity of Two Cereals”. Acta Agraria Debreceniensis, no. 15 (December 14, 2004): 39–42. Accessed July 19, 2024. https://ojs.lib.unideb.hu/actaagrar/article/view/3355.