Van Dalen, Deobold B., <br/><br/>
Understanding educational research:  an introduction 
[by] Deobold B. Van Dalen. 
 - New York,  McGraw-Hill  [1973] 
 - ix, 532 p.  illus.  24 cm. 
<br/><br/>Bibliography: p. 507-515. 
<br/><br/><label>ISBN: </label>70668825 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education--Research.
<br/><br/><label>Universal Decimal Class. No.: </label>370.78