TY  - BOOK
AU  - Billington,D.P.
TI  - Robert mallart's bridges: The art of engineering
SN  - 0691082030
PY  - 1979///
CY  - new jersey
PB  - princeton university press
KW  - mailart robert,1872-1940
KW  - Bridges-switzerland
KW  - concrete construction
ER  -