Pap, Zoltán, Ákos Király, and Krisztiánné Mariann Kis. “Effect of Azotobacter Products on Lettuce Transplants”. Review on Agriculture and Rural Development 2, no. 1 (January 1, 2013): 357–362. Accessed April 28, 2024. https://ojs.bibl.u-szeged.hu/index.php/rard/article/view/13336.