The concept of a stable population :  application to the study of populations of countries with incomplete demographic statistics. 

 - New York :  United Nations,  1968. 
 - Its Population studies ;  no. 39 United Nations. [Document] ;  ST/SOA/SER.A/39 .
 - Population studies (New York, N.Y.) ;  no. 39. Document (United Nations) ;  ST/SOA/SER.A/39 .
<br/><br/> "United Nations publication. Sales no. E. 65.XIII.3." 
<br/><br/><label>ISBN: </label> 3.50 
<br/><br/><label>LCCN: </label>75014519 //r85 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Demography -- Mathematical models.--Demography -- Mathematical models.
<br/><br/><label>LC Class. No.: </label>JX1977  / .A2 ST/SOA/Ser.A/39 
<br/><br/><label>Dewey Class. No.: </label>301.3/2