Alwin, Robert H. <br/><br/>
Algebra-programmed / 
Robert H. Alwin, Robert D. Hackworth 
 - 2nd ed. 
 - Englewood Cliffs, N. J. :  Prentice-Hall,  1978 
 - 2v. :  ill. ;  24 cm. 
<br/><br/> Includes indexes 
<br/><br/><label>ISBN: </label>0130220388  v.1 pbk 
<br/><br/><label>LCCN: </label>77-24274 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Algebra--Programmed instruction