The Modern Children's Library of Knowledge Book Four The World of Science and Invention <br/><br/>
Grolier Society's Inc.,London 

 - 384 
 - Grolier Society Inc.   1966 
 - 6090 
<br/><br/><label>ISBN: </label>GSLRC 
<br/><br/><label>Dewey Class. No.: </label>Gordon NunnB,Sc.M.A.,F.R.I.C.