Kumar, Krishan <br/><br/>
Research methods in library and information science 

 - New Delhi:  Vikas Publishing House Pvt Ltd.,  1992 
 - 317p.  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Library science
<br/><br/><label>Subjects--Index Terms: </label>Observation Survey approach 
<br/><br/><label>Universal Decimal Class. No.: </label>D 02.001.5  / N2