Samajik vigyan : Hamara pryavaran : Kaksha 7 ke liye bhugol ki pathyapustak. 
NCERT (New Delhi India) 
 - New Delhi, India  National Council of Educational Research and Training  2007 
 - vii,78p 
<br/><br/><label>ISBN: </label>81-7450-748-5 
<br/><br/><label>Source: </label>Reference 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental Education