Ferguson, Sheila A. Technology trends in CFC and halons replacement / prepared by She ila A. Ferguson, Warren R. Muir, and John S. Young. - Vienna : United Nation Industrial Development Organization, 19 90. - 46 p. : ill. ; 30 cm. - Technology trends series ; no. 11. . Includes bibliography : p. 43-46. Subjects--Topical Terms: Chlorofluorocarbons -- Environmental aspects.