http://orgprints.org/4088/ Virna - a database on organic food production Virna is an article reference database on organic food production. It contains material about such matters as organic and ecological crop production and horticulture, soil, fertilization, plant protection, animal production, processing of organic products, marketing and the environmental impacts of agriculture. The literature references have been taken from periodicals and congress publications as well as compilations. Koistinen, Riitta 9research 1organics 7food 5soil 2farming 4plant 3animal mtt Virna - a database on organic food production 2004-12-15 Koistinen, Riitta (2003) Virna - a database on organic food production. Forskningsnytt om økologisk landbruk i Norden (4), p. 13. application/pdf