Cullen, Helen F. (Helen Frances), 1919-  Cullen, Helen F. (Helen Frances), 1919- <br/><br/>
Introduction to general topology 
[by] Helen F. Cullen. 
 - Boston,  Heath  [1967, c1968] 
<br/><br/>Bibliography: p. [417]-420. 
<br/><br/><label>LCCN: </label>67016908 //r84 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Topology.
<br/><br/><label>LC Class. No.: </label>QA611  / .C84 
<br/><br/><label>Dewey Class. No.: </label>513/.83