Van Dalen, Deobold B <br/><br/>
Understanding educational research   : an introduction 
Deobold B Van Dalen 
 - 3 rd 
 - New York  Mcgraw-Hill  1973 
 - ix, 532p 
<br/><br/><br/>eng 
<br/><br/><label>ISBN: </label>0070668825 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Educational research
<br/><br/><label>Dewey Class. No.: </label>370.78  / VAU