Ackroyd, Stephen,Hughes, John, <br/><br/>
Data Collection In Context. 

 - 2nd 
 - London :  Longman,  1992 
<br/><br/><br/>English 
<br/><br/><label>Subjects--Topical Terms: </label>--Social sciences-methodology,Social sciences-research,
<br/><br/><label>Dewey Class. No.: </label>300.72 ACK