Walters, R. F. C. <br/><br/>
Categories and computer science / 
R.F.C. Walters. 
 - Cambridge :  Cambridge University Press,  1991. 
 - x, 166 p. ;  23 cm. 
 - Cambridge computer science texts ;  28<br/>. .
<br/><br/> Includes index. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0521422264 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Categories (Mathematics)--Data processing.<br/>Electronic digital computers--Programming.