Keyfitz, Nathan, 1913- <br/><br/>
Population:  facts and methods of demography/ 
Nathan Keyfitz, Wilhelm Flieger. 
 - San Francisco:  W. H. Freeman,  1971. 
 - x, 613 p. :  ill. ;   25 cm. 
<br/><br/>Bibliography: p. 607-609. 
<br/><br/><label>ISBN: </label>0716709317 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Demography--Mathematical models.<br/>Population--Statistics.