Harper, John R. <br/><br/>
Secondary cohomology operations   

 - Providence  American Mathematical Society  2002 
 - xi, 268p. Bibl. Index. 
 - Graduate Studies in Mathematics   v. 49 .
<br/><br/>  
<br/><br/><label>ISBN: </label>0281832700 
<br/><br/><label>Dewey Class. No.: </label>514  / H294.SC