Introduction to research in education / 
Donald Ary ... [et al.] 
 - 7th ed. 
 - Belmont, CA :  Thomson/Wadsworth,  2006 
 - xviii, 670 p. :  ill. ;  26 cm. 
<br/><br/> Rev. ed. of : Introduction to research in education / Donald Ary, Lucy Cheser Jacobs, Asghar Razavieh, 1972 
<br/><br/>Includes bibliographical references (p. 641-650) and index 
<br/><br/><label>ISBN: </label>0534555373  RM399.42 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education--Research