Cullen, Helen F. <br/><br/>
Introduction to general topology / 
Helen F. Cullen. 
 - Boston :  D. C. Heath and Company,  c1968. 
 - x,427 p. :  25 cm. 
<br/><br/>Bibliography: p. [417]-420. 
<br/><br/>
<br/><br/><label>Subjects--Topical Terms: </label><br/>Topology<br/>Mathematics
<br/><br/><label>LC Class. No.: </label>QA611  / .C85 1968