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박상도,백일현,Park Sang Do,Baek Il Hyeon 한국공기청정협회 1998 空氣淸淨技術 Vol.11 No.3
Recently, many environmental problems have been reported, which are caused by the utilization of fossil fuel. Eepecially, carbon dioxide from fossil fuel combustion is thought to be a main source of the global warming which affects the global environment.