Lal J N <br/><br/>
Manovigyan sankhyiki 

 - Gorakhpur, India  Vaishali Prakashan  1987 
 - 432p. 
<br/><br/><label>Source: </label>Books to be hide in OPAC 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Research Methods