Vockell, Edward L. <br/><br/>
Educational research 
Edward L. Vockell 
 - 2nd ed. 
 - Englewood Cliffs, N.J.  Prentice-Hall  1995 
 - xvi, 489 p. : ill. ; 23 cm. 
<br/><br/><label>ISBN: </label>0024231053  RM123.30 
<br/><br/><label>LCCN: </label>94-05962 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education--Research