Alvarez-Gaume L. <br/><br/>
Global Geometry and Mathematical Physics 1451 
/ by L.Alvarez-Gaume 
 - New York  Springer Verlag  1990 
 - 197p. 
<br/><br/><label>ISBN: </label>3540532862 
<br/><br/><label>Dewey Class. No.: </label>516.362  / ALV/G