Zwiebach, Borton <br/><br/>
First Course in string theory 
Barton Zwiebach 
 - New York  Cambridge University Press  2004 
 - xx, 558p. ;   26cm. 
<br/><br/><label>ISBN: </label>9780521831437 
<br/><br/><label>Dewey Class. No.: </label>530.14  / ZWI