Vockell, Edward L. <br/><br/>
Educational research / 
Edward L. Vockell 
 - New York :  MacMillan,  1983 
 - viii, 392 p. :  ill. ;  26 cm. 
<br/><br/><label>ISBN: </label>0024230707 
<br/><br/><label>LCCN: </label>82-15345 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Educational research