Das, R.C. <br/><br/>
Science Teaching in Schools /  

 - Second Rev. Ed. 1985 /  
 - New Delhi-16 :   Sterling Publishers Pvt. Ltd.. 
 - p.264,x :  
<br/><br/><label>ISBN: </label>81-207-0037-6 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science Teaching
<br/><br/><label>Dewey Class. No.: </label>T1:3(A)  / M5;3