Dillon, Edward J., Heath, Earl J. & Biggs, Carroll W. <br/><br/>
Comprehensive programming for success in learning 

 - Charles E. Merrill Publishing company, Columbus  1970 
 - x, 148 
<br/><br/><label>ISBN: </label>675-09394-5 
<br/><br/><label>Dewey Class. No.: </label>372 Dil