Building Regulation Part L2B:
Department of Energy and Climate Change:
Energy Performance Certificates:
World CO2 emissions by consumption of energy, listed by Country:
https://spreadsheets.google.com/ccc?key=0AonYZs4MzlZbdFF1QW00ckYzOG0yWkZqcUhnNDVlSWc&hl=en – gid=1
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