Spengler, Joseph J ed. <br/><br/>
Population theory and policy :  selected readings / 
edited by Joseph J Spengler and Otis Dudley Duncan 
 - Glencoe :  Free Press,  1956. 
 - x, 522p. :  diagrs., tables. 
<br/><br/>Bibliography: p. 510-519. 
<br/><br/><label>ISBN: </label>0136871526 0136871453  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Population.
<br/><br/><label>Dewey Class. No.: </label>304.60  / SPE/P