Paton, John <br/><br/>
CHILDREN'S  ENCYCLOPEDIA  (VOL - 4)  (ENGINEERING    to   GUTENBERG) 

 - London   Kingfisher  Books   1989 
 - 80Pages  ( 237 - 316)  
<br/><br/><label>ISBN: </label>0862724678 
<br/><br/><label>Dewey Class. No.: </label>032  / PAT