TY  - BOOK
AU  - Lo, K. Y.
ED  - International Congress on Progress and Innovation in Tunnelling
TI  - Comptes rendus du congres international sur les progres et innovations dans le domaine des travaux en souterrain = Proceedings of the International Congress on Progress and Innovation in Tunnelling: September 9-14, 1989, Toronto, Canada 
AV  - TA800 I57
PY  - 0000///[Canada
CY  - 
PB  - editor no identificado, 1989?]
KW  - Tuneles
KW  - Construccion
KW  - Congresos
ER  -