Cohen, Louis. <br/><br/>
Research methods in education/ 
Louis Cohen ; Louis Cohen and Lawrence Manion. 
 - 4th ed.  
 - xxii, 414 sayfa :  res. ;  24 cm. 
<br/><br/><label>ISBN: </label>0415102359 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Eğitim--Araştırma.<br/>Eğitim--Araştırma--İngiltere.<br/>Education--Research. <br/>Education--Research--Great Britain. 
<br/><br/><label>LC Class. No.: </label>LB1028  / .C64 1998