Encyclopaedia of modern educational research.  vol. 11 
<label>;</label> Sharma, S. R. 
 - New Delhi  Anmol Publications  1994 
 - 10 Vols.p.  20 cm. 
<br/><br/>PR 
<br/><br/><label>ISBN: </label>8170418372 
<br/><br/><label>Dewey Class. No.: </label>370.072  / E