Viro, O Ya <br/><br/>
Elementary Topology:Problem Textbook 

 - America  American Mathematical Society  2008 
 - xx+40 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Natural sciences & mathematics--General Stack--MathematicsTopologyMathematics
<br/><br/><label>Dewey Class. No.: </label>514  / VIR-E