United Nations 
 Short Manual on Sampling United Nations.Deptt. of Eco. 

 - 1972 
<br/><br/> Social Affairs   
 = Manuals 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Studies in Methods series ; V.1:Elements of Sample Survey<br/>Economics
<br/><br/><label>Subjects--Index Terms: </label>United Nations Manual on Sampling 1972