Kelly, A. V.  1931- <br/><br/>
Teaching mixed ability classes :  an individualized approach / 
A.V. Kelly. 
 - London :  Harper & Row,  1974. 
 - 125 p. ;  21 cm. 
<br/><br/><label>ISBN: </label>0063180154 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Nongraded schools--Great Britain.<br/>Ability grouping in education.<br/>Individualized instruction.