Spiegelman, Mortimer. <br/><br/>
Introduction to demography / 
Mortimer Spiegelman. 
 - Rev. ed. 
 - Cambridge, Mass. :  Harvard University Press,  1968. 
 - 514 p. :  ill. ;  25cm. 
<br/><br/><label>ISBN: </label>0674461002 
<br/><br/><label>LCCN: </label>68-21984 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Demography.