TY - BOOK AU - Johnson,Rebecca L. TI - Investigating the ozone hole SN - 0822515741 : AV - TD887.C47 J65 1993 U1 - 551.5/112 20 PY - 1993/// CY - Minneapolis PB - Lerner Publications KW - Chlorofluorocarbons KW - Environmental aspects KW - Juvenile literature KW - Ozone layer depletion KW - Ultraviolet radiation KW - Ozone layer KW - sears KW - Ozone N1 - Includes index; Elem. School Library Collection; Wilson's Children; Wilson's Junior High School; 6.9; Follett Library Resources; 5-8; Follett Library Resources; 7-9; Baker & Taylor N2 - Discusses the scientific studies of the ozone layer in the Earth's atmosphere, and the causes and effects of depletions of this layer ER -