Hann, Judith <br/><br/>
How science works / 
Judith Hann. 
 - London :  D. Kindersley,  c1991. 
 - 192 p. : col. ill. 
 - Eyewitness science guides .
<br/><br/> Includes glossary and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science--Juvenile literature