Keyfitz, Nathan,  1913- <br/><br/>
World population :  an analysis of vital data / 
Nathan Keyfitz and Wilhelm Flieger. 
 - London :  University of Chicago Press,  c1968 
 - xi, 672 p. ;  29 cm. 
<br/><br/>Bibliography: p. [667]-671. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Population  --Statistics.<br/>Population--Statistics.
<br/><br/><label>Dewey Class. No.: </label>304.6   / KEW 1968