Rashtriya patthyacharya ki ruprekha 2005: Vigyan shikshan: Rashtriya focus samuh ka adhar patra 
NCERT (New Delhi India) 
 - New Delhi, India  National Council of Educational Research and Training  2008 
 - x, 37p. 
<br/><br/><br/>Gifted by Lata 
<br/><br/><label>Source: </label>Reference