Switzer, M. Robert <br/><br/>
Algebraic topology  homotopy and homology 
by Robert M Switzer 
 - New York  Springer  1975 
 - xii, 526p. 
<br/><br/><label>ISBN: </label>3540427503 
<br/><br/><label>Dewey Class. No.: </label>514.2  / N751