Whitney, Douglas R., <br/><br/>
The questionnaire as a data source / 
Douglas r. whitney 
 - 33 páginas 
<br/><br/> "this paper was prepared for the aera research training session on data collection in educational research and evaluation. april 8-12, 1972" 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Entrevistas<br/>Ciencias sociales--Investigación
<br/><br/><label>LC Class. No.: </label>BF76.5  / W45