Wallen, Norman E. <br/><br/>
Educational research :  a guide to the process / 
Norman E. Wallen, Jack R. Fraenkel. 
 - New York :  McGraw-Hill,  c1991. 
 - xv, 363 p. :  ill. ;  28 cm. 
<br/><br/> Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0070679452 
<br/><br/><label>LCCN: </label>90039865  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education--Research.
<br/><br/><label>LC Class. No.: </label>LB1028  / .W275 1991