Huttunen, Inese, Markus Huttunen, Tapio Salo, Pasi Mattila, Liisa Maanavilja, and Tarja Silfver. “National-Scale Nitrogen Loading from the Finnish Agricultural Fields Has Decreased since the 1990s”. Agricultural and Food Science 32, no. 3 (October 2, 2023): 112–127. Accessed October 5, 2024. https://journal.fi/afs/article/view/125385.