| http://www.w3.org/ns/prov#value | - instead of HCFCs and HFCs, used ammonia, hydrocarbons, injected carbon dioxide or other ozone-friendly chemicals in foams and refrigerants, alternatives which are more common in Europe.(right)Cars drive past a display board showing the prices for different kinds of fuel at a gas station in the eastern German city of Potsdam, April 18, 2006.
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