Higgins Philip J <br/><br/>
Notes on categories and groupoids 
Higgins Philip J 
 -  1971 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>29228 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Higher algebra
<br/><br/><label>Dewey Class. No.: </label>B25, L11