Bergel Egon Ernest <br/><br/>
Social stratification 

 - London  McGraw-Hill            1962 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social Stratification
<br/><br/><label>Dewey Class. No.: </label>Y15:3, K2;7/TD