Heer, David M. <br/><br/>
Society and populations   

 - Second ed. 
 - Englewood Cliffs  Prentice-Hall  1975 
 - xiv, 155 p. 
 -   .
<br/><br/><label>ISBN: </label>
<br/><br/><label>Dewey Class. No.: </label>301.32  / H459