Fielding, Nigel G. Fielding, Jane, L. <br/><br/>
Linking data 

 - London  Sage  1986 
 - 96 p. 
 - Quantitave Research Methods; vol. 4 .
<br/><br/><label>ISBN: </label>803925638 
<br/><br/><label>Dewey Class. No.: </label>300.72  / FIE