Alvarez-Gaume, L., et al <br/><br/>
Global geometry & mathematical physics  lectures 2nd session of C.I.M.E., montecatini terme, italy, july 4-12, 1988 
L. Alvarez-Gaume, et al 
 - Berlin  Springer  1990 
 - ix  197 
 - Lecture notes in mathematics 1451 .
<br/><br/><label>ISBN: </label>3540532862 
<br/><br/><label>Dewey Class. No.: </label>8.07+13.01  / ALVA