Rao, V.K., Reddy, R.S. (ed) <br/><br/>
Learning & teaching 

 - Commonwealth Publishers, New Delhi  1992 
 - vi, 287 
<br/><br/><label>ISBN: </label>81-7169-235-4 
<br/><br/><label>Dewey Class. No.: </label>371.3 Rao