United Nations. Statistical Office. Economic & Social Affairs, Department of-. <br/><br/>
Principles and recommendations for the 1970 population censuses   

 - New York  The Auth.  1977 
 - 163p. 
 - Statistical papers series M, no.44 .
<br/><br/>  
<br/><br/><label>Dewey Class. No.: </label>312  / Un58.PR