Science : Textbook for class 7th 
NCERT (New Delhi India) 
 - New Delhi, India  National Council Educational Research and Training  2006 
 - x,233p 
<br/><br/><label>ISBN: </label>81-7450-654-3 
<br/><br/><label>Source: </label>Reference 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science