Keyfitz, Nathan,  1913- <br/><br/>
Demography through problems 
Nathan Keyfitz, John A. Beekman 
 - New York  Springer-Verlag  c1984 
 - viii, 141 p.  ill.  25 cm. 
 - Problem books in mathematics .
<br/><br/> Includes index 
<br/><br/>Bibliography: p. 135-136 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Demography--Problems, exercises, etc.
<br/><br/><label>Dewey Class. No.: </label>304.6  / 076