de Souza, Paulo Ney <br/><br/>
Berkeley problems in mathematics 

 - New York  Springer  1998 
 - xiv,443p.  23 cm. 
 - Problem books in mathematics .
<br/><br/><label>ISBN: </label>038794933X 
<br/><br/><label>Dewey Class. No.: </label>510.76,D,des  / _