Bourgin, D. G. <br/><br/>
Modern algebraic topology. 

 - New York,  Macmillan  [1963] 
<br/><br/>Bibliography: p. 538-540. 
<br/><br/><label>LCCN: </label>63007395 //r84 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Algebraic topology.
<br/><br/><label>LC Class. No.: </label>QA611  / .B66 
<br/><br/><label>Dewey Class. No.: </label>513.83