Britannica Learning Library :Technology and inventions  get the inside story on gadgets and systems past and present 

 - Chicago  Encyclopedia Britannica  2003 
 - 64 P.  col. ill.  28cm 
<br/><br/><label>ISBN: </label>1593390343 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Children literature,English (Indic)<br/>Children Literature-India<br/>Encyclopaedia Britannica
<br/><br/><label>Dewey Class. No.: </label>030  / BRI