Langenbach, Michael <br/><br/>
An introduction to educational research / 
Michael Langenbach, Courtney Vaughn and Lola Aagaard 
 - Boston :  Allyn and Bacon,  c1994. 
 - xii, 387 p. ;  24 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0205139027 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education--Research.
<br/><br/><label>Dewey Class. No.: </label>370.78 LAI