Cohen, Louis,  1928- <br/><br/>
Research methods in education / 
Louis Cohen, Lawrence Manion and Keith Morrison. 
 - 6th ed. 
 - xviii, 638 p. :  ill. ; 
<br/><br/> Includes index 
<br/><br/>Includes bibliographical references 
<br/><br/><label>ISBN: </label>9780415368780 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education--Research.<br/>Education--Research
<br/><br/><label>LC Class. No.: </label>LB1028 COH 2007