TY  - BOOK
AU  - Witt,P.J.
ED  - Cement and Concrete Association
TI  - Proceedings of a symposium on concrete shell roof construction, 2-4 july, 1952: Organizing secretary p. h. t. gooding 
AV  - TH2416 C34
PY  - 1954///
CY  - London
PB  - CCA
KW  - Cubiertas laminares
ER  -