Machines & inventions. 

 - Cairo :  Alexandria ;  Va :  Dar al-Kitab al-Misri ;  Time-Life,  1999. 
 - 151 p. :  col. ill. ;  31 cm. 
 - Twenty first century encyclopedia of science, technology and nature .
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>9772386682 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Discoveries in science--Juvenile literature.<br/>Inventions--Juvenile literature.<br/>Machinery--Juvenile literature.
<br/><br/><label>LC Class. No.: </label>TJ147  / .M22 1999