Sawyer, Ava, <br/><br/>
HUMANS AND EARTH'S ATMOSPHERE :  What's in the air? / 
Ava Sawyer ; Edited by Nikki Potts 
 - 32 pages :  colour illustrations, colour photographs ;  23 cm 
 - HUMANS AND OUR PLANET .
 - Humans and our planet .
<br/><br/> Includes index.  "Book Band Level: Dark Blue"--Back cover. 
<br/><br/>Bibliography: page 31. 
<br/><br/><label>ISBN: </label>9781474743754  RM75.40 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Air--Pollution--Juvenile literature<br/>Greenhouse effect, Atmospheric--Juvenile literature<br/>Human ecology--Juvenile literature<br/>Nature--Effect of human beings on--Juvenile literature
<br/><br/><label>Dewey Class. No.: </label>363.7392