Armstrong, M.A. <br/><br/>
Basic topology  Basic topology, New York : Springer-verlag, 2009 
M.A. Armstrong 
 - New York  Springer-verlag  2009 
<br/><br/><label>ISBN: </label>978-81-8128-135-7 
<br/><br/><label>Dewey Class. No.: </label>513.83