TY  - BOOK
AU  - Alvarez-Gaume, L, et al.
TI  - Superstrings 87: Proceedings of the trieste spring school 1-11 april 1987
U1  - 530.1  ALV-S 
PY  - 1987///
CY  - World Scientific Publishing Co Pte Ltd., Singapore
KW  - Theoretical physics
ER  -