Sen, B. R. <br/><br/>
Encyclopaedi of teaching science; Vol-3 

 - New Delhi  Commonwealth Publishers  2005 
 - 236  Hb 
<br/><br/><label>ISBN: </label>81-7169-952-9 (Set) 
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>
<br/><br/><label>Dewey Class. No.: </label>R375.503