TY - BOOK AU - Fisher,Marshall TI - The ozone layer T2 - Earth at risk SN - 0791015769 AV - QC881.2.O9 F57 1992 U1 - 363.73/926 20 PY - 1992/// CY - New York PB - Chelsea House KW - Chlorofluorocarbons KW - Environmental aspects KW - Juvenile literature KW - Environmental protection KW - Man KW - Influence on nature KW - Ozone layer KW - sears N1 - Includes bibliographical references (p. 99-100) and index; Booklist; School Library Journal; Wilson's Junior High School; 8.9; Follett Library Resources; 5-8; Follett Library Resources; 7-9; Baker & Taylor N2 - The ozone layer protects life on Earth from harmful ultraviolet radiation but this protective shield is being damaged by chlorofluorocarbons and other pollutants that are now being generated on the Earth ER -