Matthews, R.B. <br/><br/>
Logic tutors and their applications   
by R.B. Matthews and J.R. Abrahams 
 - London  George G. Harrap & Co. Ltd.  1968 
 - 108p.  incl. app., ind. 
<br/><br/><label>ISBN: </label>245 59540 6 
<br/><br/><label>Dewey Class. No.: </label>001.64044  / N684