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Source for land transport and short flights: GHG Protocol CO2 emissions from transport or mobile sources, http://www.ghgprotocol.org/calculation-tools/all-tools
Source long flights: IPCC, 1999. Aviation and the global atmosphere
Source for residential data: National Inventory Report, available at: http://www.ec.gc.ca/Publications/default.asp?lang=En&xml=492D914C-2EAB-47AB-A045-C62B2CDACC29
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