Jayswal, Mahendra Prasad <br/><br/>
Vikasatmak Manovigyan  Vikasatmak Manovigyan, New Delhi : Pustak Sadan, 1961 
Jayswal, Mahendra Prasad 
 - New Delhi  Pustak Sadan  1961 
<br/><br/><label>Dewey Class. No.: </label>136.5