Graham, Ian <br/><br/>
How things work / 
Ian Graham. 
 - London :  Hamlyn,  c1993. 
 - 48 p. : col. ill. 
 - 101 questions and answers .
<br/><br/> Includes glossaries and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Technology--Juvenile literature<br/>Technological innovations--Juvenile literature