Higman & Graham. <br/><br/>
Existentially Closed Groups 
Graham Higman & Elizabeth Scott 
 - Northern Ireland.  The University press.  1988 
 - xiii, 156p.  hbk. 
<br/><br/><label>ISBN: </label>0198535430 
<br/><br/><label>LC Class. No.: </label>QA171.H5 1988