Vaidya, Shobha <br/><br/>
Effect of mastery learning and concept attainment model on achievement, self concept and attitude 

 - Classical publishing co., New Delhi  1997 
 - 205 
<br/><br/><label>ISBN: </label>81-7054-259-4 
<br/><br/><label>Dewey Class. No.: </label>371.3(54) Vai