Director of Census Operations <br/><br/>
Census  1971 

 - 
 - Trivandrum  Director of Census Operations  1977 
 -   
<br/><br/>  3.Ernakulam 
<br/><br/><label>ISBN: </label>
<br/><br/><label>ISSN: </label>
<br/><br/><label>Subjects--Index Terms: </label>Census of India  India - Census  Census 
<br/><br/><label>Dewey Class. No.: </label>312(548.3)"1981"