Pfeiffer, Paul E. <br/><br/>
Sets,events,and switching 

 - London:  Mcgraw-hill book company,  1964. 
 - 131p.  21cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics
<br/><br/><label>Dewey Class. No.: </label>510  / PEF