By Gupta, S C. <br/><br/>
Fundamental of statistics 

 - 6th 
 - Mumbai  Himalaya Publishing House  2007 
 - 25.52 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sources of Primary and secondary data
<br/><br/><label>Dewey Class. No.: </label>519.5024658  / GUP