Georgieva, Natalia, Ivelina Nikolova, and Grozi Delchev. “Organic Cultivation of Field Pea by Use of Products With Different Action”. Spanish Journal of Agricultural Research 13, no. 4 (December 2, 2015): e0906. Accessed August 1, 2026. https://sjar.revistas.csic.es/index.php/sjar/article/view/7861.