Costab-Spau,  Rosa <br/><br/>
Keeping the air clean / 
By  Rosa Costab-Spau 
 - New York :   Unipress Publishing ,   2006. 
 - 29 pages :   color illustrations ;  29 cm . 
 - The junior librar of ecology .
<br/><br/>Q <br/> 
<br/><br/> Easy-to-read text and illustrations that explain global warming, the breakdown of the ozone layer, acid rain, and other environmental matters relating to the air.<br/> 
<br/><br/> 660 <br/>  Lexile estimate <br/>  Q <br/>  Raz-Plus <br/> 
<br/><br/><label>ISBN: </label>9789833733187 
<br/><br/><label>LC Class. No.: </label>TD883.13 .C8513 
<br/><br/><label>Dewey Class. No.: </label>363.73