Application of the nitrogen model to agricultural land - Kätterer, Thomas; Eckersten, Henrik; Heidmann, Tove; Borg, Gunnar; Sippola, Jouko; Breland, Tor Arvid; Vold, Arild; Haugen, Lars-Egil; Thomsen, Anton; Blombäck, Karin; Bakken, Lars (Nordic Council of Ministers, 1999)
Keywords: Ka; typpilannoitus; mallintaminen