United Nations. Interregional workshop on methodology of demographic sample surveys, Copenhagn, Denmark, 24 September-3 October 1969 <br/><br/>
Methodology of demographic sample surveys: report 
by Department of Economic and Social Affairs, Statistical Office of the United Nations 
 - New York  United Nations  1971 
 - 311+p. 
 - Statistical Papers Series M No. 51 .
<br/><br/><label>Dewey Class. No.: </label>B120651 Un3de