Van  Dalen  Deobold  B. <br/><br/>
Understanding Educational Research :  An Introduction 

 - 3rd ed. 
 - New York  McGraw  1974 
 - 532 p. 
<br/><br/><label>ISBN: </label>0070668825 
<br/><br/><label>Subjects--Topical Terms: </label><br/>”EDUCATIONAL RESEARCH”
<br/><br/><label>LC Class. No.: </label>LB1028  / V36U 1974