Viro, O.Ya & others, <br/><br/>
Elementary Topology :  Problem Textbook /  Textual Documents 
O.Ya. Viro ......et all . 
 - ist indian ed. 
 - New York  American Mathematical Society  2012 
 - pg400:  30cm. 
<br/><br/><label>ISBN: </label>9780821887264 
<br/><br/><label>Subjects--Index Terms: </label>Topology Mathematics Elementary Topology G- Mathematics 
<br/><br/><label>Dewey Class. No.: </label>514