Viro, Ya O <br/><br/>
Elementary topology : problem textbook 

 - Rhode Island  American Mathematical Society  2008 
 - xx, 400p.   
<br/><br/> Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>9780821887264 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Algebraic topology<br/>Mathematics<br/>Topology