Groups and subgroups 

 - Milton Keynes  The Open University  1991 
 - 62p.  31cm 
<br/><br/><label>ISBN: </label>0749220384 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Groups and group theory
<br/><br/><label>Dewey Class. No.: </label>512.2  / OPe