Johnstone, P. T. <br/><br/>
Topos theory 
P. T. Johnstone 
 - London  New York  Academic Press  1977 
 - xxiii, 367 p.  ill.  24 cm 
 - L.M.S. monographs  10 .
 - London Mathematical Society  L.M.S. monographs  10 .
<br/><br/> Includes indexes 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Toposes
<br/><br/><label>Dewey Class. No.: </label>512  / .55