Velayudan Nair, K. <br/><br/>
Samuhya vijnana pravesam / 
by K. Velayudan Nair 
 - Thiruvananthapuram :  Bhasha Institute,  1971. 
<br/><br/><br/>In Malayalam 
<br/><br/><label>Subjects--Index Terms: </label>Social Science