@phdthesis{556b6b69c9c04e998b21e8423c1a9adc,
title = "Crop production without fossil fuel: production systems for tractor fuel and mineral nitrogen based on biomass",
keywords = "acidification, biofuels, climatic change, diesel oil, environmental impact assessment, eutrophication, greenhouse effect, nitrogen fertilizers, organic agriculture, plant production, sweden, acidification, biofuels, climatic change, diesel oil, environmental impact assessment, eutrophication, greenhouse effect, nitrogen fertilizers, organic agriculture, plant production, sweden",
author = "Serina Ahlgren",
year = "2009",
language = "English",
isbn = "978-91-576-7425-8",
series = "Acta Universitatis Agriculturae Sueciae",
publisher = "Swedish University of Agricultural Sciences",
number = "2009:78",
address = "Sweden",
}