01106cam a2200337 i 4500 262172776 TxAuBib 20160512120000.0 130827s2015||||||||||||||||||||||||eng|u 2013034766 9781625881618 hbk. 1625881614 hbk. (OCoLC)857288158 TxAuBib rda Colson, Mary,. What happens if the ozone disappears? / Mary Colson. Mankato, Minnesota : A+, Smart Apple Media, 2015. 32 pages : color illustrations ; 28 cm. txt rdacontent n rdamedia nc rdacarrier Unstable Earth Includes bibliographical references and index. Grades 4 to 6. 20160512. Ozone layer Juvenile literature. Atmospheric ozone Juvenile literature. Air Pollution Juvenile literature. Unstable Earth. TXWIT