SALO, T., J. ESKELINEN, and L. JAUHIAINEN. “Reduced Fertiliser Use and Changes in Cereal Grain Weight, Test Weight and Protein Content in Finland in 1990-2005”. Agricultural and Food Science 16, no. 4 (January 4, 2007): 407–420. Accessed November 22, 2024. https://journal.fi/afs/article/view/5894.