Ammonia emissions from agriculture - summary of the Nordic seminar on ammonia emission, science and policy - Kirchmann, Holger; Esala, Martti; Morken, John; Ferm, Martin; Bussink, Wim; Gustavsson, Jan; Jakobsson, Christine (Kluwer, 1998)
Keywords: Ka; ammoniakki; typpi; päästöt; maatalous