Bhattacharya, S. P. <br/><br/>
Personalized system of instruction (PSI) or keller plan  : a new approach in management of learning in India 

 - New Delhi  ; Ajanta Publications  , 1992 
 - 44p. 
<br/><br/><label>ISBN: </label>8120203771  85 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education
<br/><br/><label>Dewey Class. No.: </label>371.394  / BHA