Britannica work book : Book ix physics work and energy 

 - New Delhi :  Encyclopaedia Britannica,  2002. 
 - 118p.;  28cm 
<br/><br/><label>ISBN: </label>81-7991-005-9/81-7154-929-2 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Physics
<br/><br/><label>Dewey Class. No.: </label>530  / WOR