Wicki L. Influence of biological improvements gained in new varieties on yields and production of cereals in Poland. Rocz. Nauk. Ekonom. Rol. Rozw. Obsz. Wiej. [Internet]. 2008 Mar. 28 [cited 2026 Nov. 10];94(2):136-4. Available from: https://rnr.sggw.edu.pl/article/view/8847