Cool inventions that changed the world 

 - Uttar Pradesh, India :  Om Books International ,  ©2016 
 - 32 pages :  color illustrations ;  28 cm 
<br/><br/><label>ISBN: </label>
<br/><br/><label>Subjects--Topical Terms: </label><br/>Inventions --History<br/>Inventors--History
<br/><br/><label>Dewey Class. No.: </label>C 608  / C766 2016