Hentschel J <br/><br/>
Distinguishing between types of data and methods of collecting them 

 - Washington DC  World Bank  1998 
 - 37p.  See WB 331.22 PAY (Includes Acc. Nos. 20230, 20231, 20232 & 20233) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>STATISTICS