Vigyan: Kaksha 6 ke liye patthyapustak 
NCERT (New Delhi India) 
 - New Delhi, India  National Council of Educational Research and Training  2006 
 - x, 165p. 
<br/><br/><br/>Gifted by Prof. Anita Rampal 
<br/><br/><label>ISBN: </label>81-7450-526-1 
<br/><br/><label>Source: </label>Reference