Spiegelman, Mortimer. <br/><br/>
introduction to demography / 
Mortimer Spiegelman 
 - Chicago:  Society of Actuaries US,  1955 
 - xxi, 309p.:  ill.;  24 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Demography
<br/><br/><label>Dewey Class. No.: </label>312  / SPI