?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Virna+-+a+database+on+organic+food+production&rft.creator=Koistinen%2C+Riitta&rft.subject=Research+methodology+and+philosophy&rft.subject=+%22Organics%22+in+general&rft.subject=+Food+systems&rft.subject=+Soil&rft.subject=+Farming+Systems&rft.subject=+Crop+husbandry&rft.subject=+Animal+husbandry&rft.description=Virna+is+an+article+reference+database+on+organic+food+production.+It+contains+material+about+such+matters+as+organic+and+ecological+crop+production+and+horticulture%2C+soil%2C+fertilization%2C+plant+protection%2C+animal+production%2C+processing+of+organic+products%2C+marketing+and+the+environmental+impacts+of+agriculture.+The+literature+references+have+been+taken+from+periodicals+and+congress+publications+as+well+as+compilations.&rft.publisher=Sveriges+lantbruksuniversitet&rft.date=2003-12&rft.type=Journal+paper&rft.type=NonPeerReviewed&rft.format=application%2Fpdf&rft.identifier=http%3A%2F%2Forgprints.org%2F4088%2F1%2F4088.pdf&rft.identifier=Koistinen%2C+Riitta+(2003)+Virna+-+a+database+on+organic+food+production.+Forskningsnytt+om+%C3%83%C2%B8kologisk+landbruk+i+Norden+(4)%2C+p.+13.&rft.relation=http%3A%2F%2Forgprints.org%2F4088%2F