Gall, Meredith D. <br/><br/>
Educational research an introduction 

 - 8th ed. 
 - Boston  Pearson  2007 
 - 672 p 
<br/><br/><label>ISBN: </label>0-205-50345-4 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education
<br/><br/><label>LC Class. No.: </label>LB 1028 . B6/