Nykänen, Arja; Hakala, Kaija; Halinen, Arja; Hannukkala, Asko; Keskitalo, Marjo; Kirkkari, Anna-Maija; Palojärvi, Ansa; Tolonen, Kaisa and Tontti, Tiina (2005) Plant production and soil science research under research program for organic food and farming in Finland. [ Unpublished, ]