Freyd, Peter J. <br/><br/>
Categories, allegories / 
Peter J. Freyd, Andre Scedrov. 
 - Amsterdam ;  New York :  North-Holland ;  Sole distributors for the U.S.A. and Canada, Elsevier Science Pub.,  1990. 
 - xvii, 296 p. :  ill. 
 - North-Holland mathematical library ;  v. 39 .
 - 51 .
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0444703683 : 0444703675 (pbk.) : 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Categories (Mathematics)<br/>Allegories (Mathematics)
<br/><br/><label>Dewey Class. No.: </label>51