National sample survey (Second  round) , 

 -  1960 
 - Its NSS series, 2 .
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pakistan
<br/><br/><label>Dewey Class. No.: </label>X.44Q7.N6t4, K2