Barr, Michael. <br/><br/>
Toposes, triples, and theories/ 
Michael Barr and Charles Wells. 
 - New York:  Springer-Verlag,  c1985. 
 - xiii, 345 p.:  ill.;  25 cm. 
 - Grundlehren der mathematischen Wissenschaften.  278. .
<br/><br/> Includes indexes. 
<br/><br/>Bibliography: p. 333-338. 
<br/><br/><label>ISBN: </label>0387961151 
<br/><br/><label>LCCN: </label>84020233 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Categories (Mathematics)<br/>Toposes.<br/>Triples, Theory of
<br/><br/><label>Dewey Class. No.: </label>512.55