Gall, Meredith D.,  1942- 
Educational research :  an introduction / 
Meredith D. Gall, Joyce P. Gall, Walter R. Borg. 
 - Boston, MA :  Allyn and Bacon,  2003. 
 - p. cm. 
Includes bibliographical references and indexes. 
0321081897 (alk. paper) 
2002018689 
Education--Research.
Education--Research--United States.
370/.7/2