Green, Michael B. <br/><br/>
Superstring theory  2  Loop amplitudes, anomalies and phenomenology 
Michael B. Green; John H. Schwarz; Edward Witten 
 - Repr. with corr., paperback ed. 
<br/><br/><label>ISBN: </label>0521357535 
<br/><br/><label>Standard No.: </label>9780521357531