Individualized instruction in mathematics / 
Sam Duker. 
 - Metuchen, N. J. :  Scarecrow Press,  1972. 
 - 423 p. ;  23 cm. 
<br/><br/>Bibliography : p. 412-416. 
<br/><br/><label>ISBN: </label>0810805332 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--Study and teaching.