Weller, Susan C <br/><br/>
Systematic data collection 

 - London  SAGE Publications  1988 
 - 95  Pb 
<br/><br/><label>ISBN: </label>0-8039-3074-7 
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>
<br/><br/><label>Dewey Class. No.: </label>001.433