Statistical yearbook 

 - Paris  Unesco          1991 
<br/><br/><label>Standard No.: </label>71743 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>SOCIOLOGY
<br/><br/><label>Dewey Class. No.: </label>Y3n1:N45, N1