Travers, Robert Morris William,  1913- <br/><br/>
An introduction to educational research / 
by Robert M. W. Travers. 
 - 3d ed. 
 - London :  MacMillan,  1968. 
 - xxi, 450 p. ;  24 cm. 
<br/><br/>Bibliography : p. 427-436. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education--Research.