Spiegelman, Mortimer. <br/><br/>
Introduction to demography / 
M. Spiegelman 
 - Rev. ed. 
 - Cambridge,   Harvard University Press,   1968. 
 - xix, 514 p.:   ill.;   25 cm. 
<br/><br/>Includes bibliographical reference: p. [425]-502. 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Demography.
<br/><br/><label>Dewey Class. No.: </label>312 SPE