GAY,D. <br/><br/>
EXPLORATIONS IN TOPOLOGY:MAP COLOURING,SURFACES,AND KNOTS 

 - Amsterdam  Elsevier  2007 
 - xii+339p.,23X16Cms. 
<br/><br/><label>ISBN: </label>0123708588 
<br/><br/><label>Dewey Class. No.: </label>514 G285