Sheaf theory/ 
Bredon,Glen E. 
 - 2nd ed. 
 - New York:  Springer,  1997. 
 - 502 p. 
<br/><br/><label>ISBN: </label>9780387949055 
<br/><br/><label>Dewey Class. No.: </label>514.224  / BRE/S