Gall, Meredith D., <br/><br/>
Educational research :  an introduction / 
Meredith D. Gall, Joyce P. Gall, Walter R. Borg. 
 - 8th ed. 
 - Boston :  Pearson/Allyn & Bacon,  c2007. 
 - xxxi, 672 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographical references and indexes. 
<br/><br/><label>ISBN: </label>0205488498  TZS 90478.54/= 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education
<br/><br/><label>Dewey Class. No.: </label>370.72 GAL