Scheme for improvement of population data 

 -  1954 
<br/><br/><label>Standard No.: </label>69948 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>SOCIOLOGY
<br/><br/><label>Dewey Class. No.: </label>Y1:5, J42