00851naa a2200193Ia 4500 200107s1992 xx 000 0 und d 0-7910-1601-3 HS 363.73926 F53 1992 F53 HS 363.73926 F53 1992 F53 1394 Fisher, Marshall 2911 The ozone layer. New York Chelsea House Publishers, 1992. 110 Tells of the 20-year effort to discover what was really happening in the upper atmosphere; describes how scientists and environmentalists have struggled to make the danger known and to restrict the production of CFCs and other ozone-destroying chemicals throughout the world. Ozone layer Juvenile literature 2912 Chlorofluorocarbons Environmental aspects Juvenile literature 2913 ddc BK 1394 1394 0 0 ddc 0 0 FOUNDATION FOUNDATION FPA-HSCIRC 2018-03-23 Donated HS 363.73926 F53 1992 F53 61034 2022-02-23 00:00:00 2022-02-23 BK