Keyfitz Nathan <br/><br/>
World population    An analysis of vital data.    

 - Chicago  University of Chicago Press         1968 
 - x,672p  cm. 
<br/><br/> Bibliography : P667-72 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>Y:5.1.N6s, K8