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2. Sverige mot minskad klimatpåverkan;Swedish Environmental Protection Agency,1995
3. Utsläpp till luft i Sverige av svaveldioxid, kväveoxider, ammoniak och koldioxid, 1994;Statistics Sweden,1995
4. Environment and Health;Swedish Environmental Protection Agency,1993
5. Choosing an Alternative Transportation Fuel, Air Pollution and Greenhouse Gas Impacts;OECD,1993